WikiTI - User contributions [en]

83Plus:BCALLs:40A5

2005-10-14T18:14:05Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|Int]] [[Category:83Plus:BCALLs:By Name|Int]] [[Category:83Plus:BCALLs:By Address|40A5 - Int]]
== Synopsis ==
'''Official Name:''' Int

'''BCALL Address:''' 40A5

Rounds [[83Plus:RAM:8478|OP1]] to an integer.

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = OP1 rounded to an integer

=== Destroys ===
* AF, BC, DE, HL

=== Comments ===
* If you do not want to round and would like to find the floor of OP1, you can use [[83Plus:BCALLs:4060|Trunc]]

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL SqRoot ;returns with OP1=floating point 1.7320508075689
B_CALL Int ;returns with OP1=2</nowiki>

83Plus:BCALLs:4084

2005-08-03T15:11:47Z

66.66.23.91: /* Registers Destroyed */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPMult]] [[Category:83Plus:BCALLs:By Name|FPMult]] [[Category:83Plus:BCALLs:By Address|4084 - FPMult]]
== Synopsis ==
'''Official Name:''' FPMult

'''BCALL Address:''' 4084

Multiplies the floating point number in [[83Plus:RAM:8478|OP1]] by the floating point number in [[83Plus:RAM:8483|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = OP1 * OP2

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3
* Approx. TStates:
** worst case
*** 11,000
** if insignificant digits of op2 are filled with zeros
*** 3,000 (where op2 is a single digit number)

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
B_CALL FPMult ;returns with OP1=floating point 6
</nowiki>

83Plus:BCALLs:4099

2005-08-03T15:11:01Z

66.66.23.91: /* Outputs */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPDiv]] [[Category:83Plus:BCALLs:By Name|FPDiv]] [[Category:83Plus:BCALLs:By Address|4099 - FPDiv]]
== Synopsis ==
'''Official Name:''' FPDiv

'''BCALL Address:''' 4099

Divides the floating point number in [[83Plus:RAM:8478|OP1]] by the floating point number in [[83Plus:RAM:8483|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point
* [[83Plus:RAM:8483|OP2]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = OP1/OP2
* Approx. TStates:
** Worst Case
*** 55,000
** If op2 is truncated and filled with zeros
*** 35,000 (if op2 is a one digit float)

=== Destroys ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP1Set4 ;op2=4
B_CALL FPDiv ;returns with OP1=floating point 0.75</nowiki>

83Plus:BCALLs:40C0

2005-08-03T15:09:53Z

66.66.23.91: /* Comments */

[[Category:83Plus:BCALLs:By Name:FP_Math|cos]] [[Category:83Plus:BCALLs:By Name|cos]] [[Category:83Plus:BCALLs:By Address|40C0 - cos]]
== Synopsis ==
'''Official Name:''' cos

'''BCALL Address:''' 40C0

Computes the cosine of [[83Plus:RAM:8478|OP1]] and returns the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = cosine of OP1
* Approx. TStates: 150,000 to 200,000

=== Destroys ===
* AF, BC, DE, HL
* OP1-OP5

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL cos ;returns with OP1=-0.9899924...</nowiki>

83Plus:BCALLs:4099

2005-08-03T14:57:17Z

66.66.23.91: /* Outputs */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPDiv]] [[Category:83Plus:BCALLs:By Name|FPDiv]] [[Category:83Plus:BCALLs:By Address|4099 - FPDiv]]
== Synopsis ==
'''Official Name:''' FPDiv

'''BCALL Address:''' 4099

Divides the floating point number in [[83Plus:RAM:8478|OP1]] by the floating point number in [[83Plus:RAM:8483|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point
* [[83Plus:RAM:8483|OP2]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = OP1/OP2
* Approx. TStates:
* Worst Case
* 55,000
* If op2 is truncated and filled with zeros
* 35,000 (if op2 is a one digit float)

=== Destroys ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP1Set4 ;op2=4
B_CALL FPDiv ;returns with OP1=floating point 0.75</nowiki>

83Plus:BCALLs:4084

2005-08-03T14:46:16Z

66.66.23.91: /* Registers Destroyed */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPMult]] [[Category:83Plus:BCALLs:By Name|FPMult]] [[Category:83Plus:BCALLs:By Address|4084 - FPMult]]
== Synopsis ==
'''Official Name:''' FPMult

'''BCALL Address:''' 4084

Multiplies the floating point number in [[83Plus:RAM:8478|OP1]] by the floating point number in [[83Plus:RAM:8483|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = OP1 * OP2

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3
* Approx. TStates:
* worst case
* 11,000
* if insignificant digits of op2 are filled with zeros
* 3,000 (where op2 is a single digit number)

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
B_CALL FPMult ;returns with OP1=floating point 6
</nowiki>

83Plus:BCALLs:40B4

2005-08-03T14:22:44Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|eToX]] [[Category:83Plus:BCALLs:By Name|eToX]] [[Category:83Plus:BCALLs:By Address|40B4 - eToX]]
== Synopsis ==
'''Official Name:''' eToX

'''BCALL Address:''' 40B4

Computes the e^[[83Plus:RAM:8478|OP1]], where e is the natural exponent, and returns the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = e^OP1
* Approx. TStates: 100,000

=== Destroys ===
* AF, BC, DE, HL
* OP1-OP4

=== Comments ===
The cycle count for this routine is very high.

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL eToX ;returns with OP1=20.08553692...</nowiki>

83Plus:BCALLs:40C0

2005-08-03T13:53:49Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|cos]] [[Category:83Plus:BCALLs:By Name|cos]] [[Category:83Plus:BCALLs:By Address|40C0 - cos]]
== Synopsis ==
'''Official Name:''' cos

'''BCALL Address:''' 40C0

Computes the cosine of [[83Plus:RAM:8478|OP1]] and returns the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = cosine of OP1
* Approx. TStates: 150,000 to 200,000

=== Destroys ===
* AF, BC, DE, HL
* OP1-OP5

=== Comments ===
The cycle count for this routine is very high because the algorithm uses an infinite series to approximate the cosine. Where speed is critical, a trig table should be used.

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL cos ;returns with OP1=-0.9899924...</nowiki>

83Plus:BCALLs:40AB

2005-07-17T04:53:35Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|LnX]] [[Category:83Plus:BCALLs:By Name|LnX]] [[Category:83Plus:BCALLs:By Address|40AB - LnX]]
== Synopsis ==
'''Official Name:''' LnX

'''BCALL Address:''' 40AB

Computes the natural log of [[83Plus:RAM:8478|OP1]] and returns the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = natural log of OP1

=== Destroys ===
* AF, BC, DE, HL
* OP1-OP4
* OP5 - ? Doesn't look like it but the SDK does claim OP5 is destroyed.

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL LnX ;returns with OP1=1.0986122886681</nowiki>

83Plus:BCALLs:40A8

2005-07-13T03:45:41Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|Round]] [[Category:83Plus:BCALLs:By Name|Round]] [[Category:83Plus:BCALLs:By Address|40A8 - Round]]
== Synopsis ==
'''Official Name:''' Round

'''BCALL Address:''' 40A8

Rounds [[83Plus:RAM:8478|OP1]] to the Nth decimal place where N is specified by register D.

=== Inputs ===
* D = number of decimal digits to round to
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = OP1 rounded to an integer

=== Destroys ===
* AF, BC, HL

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL SqRoot ;returns with OP1=floating point 1.7320508075689
ld d,2
B_CALL Round ;returns with OP1=1.73</nowiki>

83Plus:BCALLs:40A5

2005-07-12T02:00:42Z

66.66.23.91: /* Destroys */

[[Category:83Plus:BCALLs:By Name:FP_Util|Int]] [[Category:83Plus:BCALLs:By Name|Int]] [[Category:83Plus:BCALLs:By Address|40A5 - Int]]
== Synopsis ==
'''Official Name:''' Int

'''BCALL Address:''' 40A5

Rounds [[83Plus:RAM:8478|OP1]] to an integer.

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = OP1 rounded to an integer

=== Destroys ===
* AF, BC, DE, HL

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL SqRoot ;returns with OP1=floating point 1.7320508075689
B_CALL Int ;returns with OP1=2</nowiki>

83Plus:BCALLs:40A5

2005-07-12T01:58:23Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|Int]] [[Category:83Plus:BCALLs:By Name|Int]] [[Category:83Plus:BCALLs:By Address|40A5 - Int]]
== Synopsis ==
'''Official Name:''' Int

'''BCALL Address:''' 40A5

Rounds [[83Plus:RAM:8478|OP1]] to an integer.

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = OP1 rounded to an integer

=== Destroys ===
* None

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL SqRoot ;returns with OP1=floating point 1.7320508075689
B_CALL Int ;returns with OP1=2</nowiki>

83Plus:BCALLs:409C

2005-05-01T23:17:37Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|SqRoot]] [[Category:83Plus:BCALLs:By Name|SqRoot]] [[Category:83Plus:BCALLs:By Address|409C - SqRoot]]
== Synopsis ==
'''Official Name:''' SqRoot

'''BCALL Address:''' 409C

Calculates the square root of the floating point number in [[83Plus:RAM:8478|OP1]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* [[83Plus:RAM:8478|OP1]] = floating point

=== Outputs ===
* [[83Plus:RAM:8478|OP1]] = Sqrt(OP1)

=== Destroys ===
* AF, BC, DE, HL, OP2, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL SqRoot ;returns with OP1=floating point 1.732</nowiki>

83Plus:BCALLs:408D

2005-04-25T04:32:41Z

66.66.23.91: /* Synopsis */

[[Category:83Plus:BCALLs:By Name:FP_Util|InvOP1S]] [[Category:83Plus:BCALLs:By Name|InvOP1S]] [[Category:83Plus:BCALLs:By Address|408D - InvOP1S]]
== Synopsis ==
'''Official Name:''' InvOP1S

'''BCALL Address:''' 408D

Negates the floating point number in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = -OP1

=== Registers Destroyed ===
* AF

=== Comments ===
This routine inverts the sign bit of OP1 unless it is a floating point zero. If the value in OP1 is a floating point zero, then the sign bit is not inverted.

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL InvOP1S ;returns with OP1=-3
</nowiki>

83Plus:BCALLs:408A

2005-04-25T04:32:21Z

66.66.23.91: /* Synopsis */

[[Category:83Plus:BCALLs:By Name:FP_Util|InvOP1SC]] [[Category:83Plus:BCALLs:By Name|InvOP1SC]] [[Category:83Plus:BCALLs:By Address|408A - InvOP1SC]]
== Synopsis ==
'''Official Name:''' InvOP1SC

'''BCALL Address:''' 408A

Negates the complex value represented by [[83Plus:RAM:8478|OP1]] and [[83Plus:RAM:8483|OP2]].

=== Inputs ===
* OP1:OP2 = complex number

=== Outputs ===
* OP1:OP2 = -(OP1:OP2)

=== Registers Destroyed ===
* AF

=== Comments ===
This routine inverts the sign bits of OP1 and OP2 unless they are floating point zeros. If the value in OP1 or OP2 is a floating point zero, then the sign bit of the floating point number is not inverted.

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
;now OP1:OP2=3+2i
B_CALL InvOP1SC ;returns with OP1:OP2=-3-2i
</nowiki>

83Plus:BCALLs:4084

2005-04-25T04:31:48Z

66.66.23.91: /* Synopsis */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPMult]] [[Category:83Plus:BCALLs:By Name|FPMult]] [[Category:83Plus:BCALLs:By Address|4084 - FPMult]]
== Synopsis ==
'''Official Name:''' FPMult

'''BCALL Address:''' 4084

Multiplies the floating point number in [[83Plus:RAM:8478|OP1]] by the floating point number in [[83Plus:RAM:8483|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = OP1 * OP2

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
B_CALL FPMult ;returns with OP1=floating point 6
</nowiki>

83Plus:BCALLs:4081

2005-04-25T04:31:06Z

66.66.23.91: /* Synopsis */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPSquare]] [[Category:83Plus:BCALLs:By Name|FPSquare]] [[Category:83Plus:BCALLs:By Address|4081 - FPSquare]]
== Synopsis ==
'''Official Name:''' FPSquare

'''BCALL Address:''' 4081

Raises the floating point number in [[83Plus:RAM:8478|OP1]] to the second power and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = OP1^2
* OP2 = orginal value of OP1

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL FPSquare ;returns with OP1=floating point 9
</nowiki>

83Plus:BCALLs:4081

2005-04-25T04:30:25Z

66.66.23.91: /* Synopsis */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPSquare]] [[Category:83Plus:BCALLs:By Name|FPSquare]] [[Category:83Plus:BCALLs:By Address|4081 - FPSquare]]
== Synopsis ==
'''Official Name:''' FPSquare

'''BCALL Address:''' 4081

Raises the floating point number in [[83Plus:RAM:8478|OP1]] to the second power and stores the result in [[83Plus:RAM:8483|OP1]].

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = OP1^2
* OP2 = orginal value of OP1

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL FPSquare ;returns with OP1=floating point 9
</nowiki>

83Plus:BCALLs:4090

2005-04-25T04:29:24Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|InvOP2S]] [[Category:83Plus:BCALLs:By Name|InvOP2S]] [[Category:83Plus:BCALLs:By Address|4090 - InvOP2S]]
== Synopsis ==
'''Official Name:''' InvOP2S

'''BCALL Address:''' 4090

Negates the floating point number in [[83Plus:RAM:8483|OP2]].

=== Inputs ===
* OP2 = floating point number

=== Outputs ===
* OP2 = -OP2

=== Registers Destroyed ===
* AF

=== Comments ===
This routine inverts the sign bit of OP2 unless it is a floating point zero. If the value in OP2 is a floating point zero, then the sign bit is not inverted.

== Example ==
<nowiki>B_CALL OP2Set3 ;OP2=floating point 3
B_CALL InvOP2S ;returns with OP2=-3
</nowiki>

83Plus:BCALLs:408D

2005-04-25T04:27:28Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|InvOP1S]] [[Category:83Plus:BCALLs:By Name|InvOP1S]] [[Category:83Plus:BCALLs:By Address|408D - InvOP1S]]
== Synopsis ==
'''Official Name:''' InvOP1S

'''BCALL Address:''' 408D

Negates the floating point number in [[83Plus:RAM:8483|OP1]].

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = -OP1

=== Registers Destroyed ===
* AF

=== Comments ===
This routine inverts the sign bit of OP1 unless it is a floating point zero. If the value in OP1 is a floating point zero, then the sign bit is not inverted.

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL InvOP1S ;returns with OP1=-3
</nowiki>

83Plus:BCALLs:408A

2005-04-25T04:23:48Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|InvOP1SC]] [[Category:83Plus:BCALLs:By Name|InvOP1SC]] [[Category:83Plus:BCALLs:By Address|408A - InvOP1SC]]
== Synopsis ==
'''Official Name:''' InvOP1SC

'''BCALL Address:''' 408A

Negates the complex value represented by [[83Plus:RAM:8483|OP1]] and [[83Plus:RAM:8478|OP2]].

=== Inputs ===
* OP1:OP2 = complex number

=== Outputs ===
* OP1:OP2 = -(OP1:OP2)

=== Registers Destroyed ===
* AF

=== Comments ===
This routine inverts the sign bits of OP1 and OP2 unless they are floating point zeros. If the value in OP1 or OP2 is a floating point zero, then the sign bit of the floating point number is not inverted.

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
;now OP1:OP2=3+2i
B_CALL InvOP1SC ;returns with OP1:OP2=-3-2i
</nowiki>

83Plus:BCALLs:4084

2005-04-25T04:12:30Z

66.66.23.91: /* Example */

[[Category:83Plus:BCALLs:By Name:FP_Math|FPMult]] [[Category:83Plus:BCALLs:By Name|FPMult]] [[Category:83Plus:BCALLs:By Address|4084 - FPMult]]
== Synopsis ==
'''Official Name:''' FPMult

'''BCALL Address:''' 4084

Multiplies the floating point number in [[83Plus:RAM:8483|OP1]] by the floating point number in [[83Plus:RAM:8478|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = OP1 * OP2

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
B_CALL FPMult ;returns with OP1=floating point 6
</nowiki>

83Plus:BCALLs:4084

2005-04-25T04:12:03Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|FPMult]] [[Category:83Plus:BCALLs:By Name|FPMult]] [[Category:83Plus:BCALLs:By Address|4084 - FPMult]]
== Synopsis ==
'''Official Name:''' FPMult

'''BCALL Address:''' 4084

Multiplies the floating point number in [[83Plus:RAM:8483|OP1]] by the floating point number in [[83Plus:RAM:8478|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = OP1 * OP2

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
B_CALL FPAdd ;returns with OP1=floating point 6
</nowiki>

83Plus:BCALLs:4081

2005-04-25T04:09:00Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|FPSquare]] [[Category:83Plus:BCALLs:By Name|FPSquare]] [[Category:83Plus:BCALLs:By Address|4081 - FPSquare]]
== Synopsis ==
'''Official Name:''' FPSquare

'''BCALL Address:''' 4081

Raises the floating point number in [[83Plus:RAM:8483|OP1]] to the second power and stores the result in [[83Plus:RAM:8483|OP1]].

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = OP1^2
* OP2 = orginal value of OP1

=== Registers Destroyed ===
* AF, BC, DE, HL, OP3

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL FPSquare ;returns with OP1=floating point 9
</nowiki>

83Plus:BCALLs:407E

2005-04-25T04:04:27Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|TimesPt5]] [[Category:83Plus:BCALLs:By Name|TimesPt5]] [[Category:83Plus:BCALLs:By Address|407E - TimesPt5]]
== Synopsis ==
'''Official Name:''' TimesPt5

'''BCALL Address:''' 407E

Halves the floating point number in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = OP1/2
* OP2 = floating point 0.5

=== Registers Destroyed ===
* AF, BC, DE, HL

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL TimesPt5 ;returns with OP1=floating point 1.5
</nowiki>

83Plus:BCALLs:4075

2005-04-24T00:01:12Z

66.66.23.91: /* Comments */

[[Category:83Plus:BCALLs:By Name:FP_Math|DToR]] [[Category:83Plus:BCALLs:By Name|DToR]] [[Category:83Plus:BCALLs:By Address|4075 - DToR]]
== Synopsis ==
'''Official Name:''' DToR

'''BCALL Address:''' 4075

Converts degrees to radians.

=== Inputs ===
* OP1 = degrees

=== Outputs ===
* OP1 = radians
* OP2 = Pi/180

=== Registers Destroyed ===
* AF, BC, DE, HL

=== Comments ===
This conversion is done by multiplying [[83Plus:RAM:8478|OP1]] by Pi/180. This number may exceed 2Pi.

== Example ==
<nowiki>B_CALL OP1Set5 ;OP1=floating point 5
B_CALL DToR ;returns with OP1=floating point 0.087266...
</nowiki>

83Plus:BCALLs:4075

2005-04-24T00:00:42Z

66.66.23.91: /* Example */

[[Category:83Plus:BCALLs:By Name:FP_Math|DToR]] [[Category:83Plus:BCALLs:By Name|DToR]] [[Category:83Plus:BCALLs:By Address|4075 - DToR]]
== Synopsis ==
'''Official Name:''' DToR

'''BCALL Address:''' 4075

Converts degrees to radians.

=== Inputs ===
* OP1 = degrees

=== Outputs ===
* OP1 = radians
* OP2 = Pi/180

=== Registers Destroyed ===
* AF, BC, DE, HL

=== Comments ===
This conversion is done by multiplying [[83Plus:RAM:8478|OP1]] by Pi/180.

== Example ==
<nowiki>B_CALL OP1Set5 ;OP1=floating point 5
B_CALL DToR ;returns with OP1=floating point 0.087266...
</nowiki>

83Plus:BCALLs:4075

2005-04-24T00:00:27Z

66.66.23.91: /* Outputs */

[[Category:83Plus:BCALLs:By Name:FP_Math|DToR]] [[Category:83Plus:BCALLs:By Name|DToR]] [[Category:83Plus:BCALLs:By Address|4075 - DToR]]
== Synopsis ==
'''Official Name:''' DToR

'''BCALL Address:''' 4075

Converts degrees to radians.

=== Inputs ===
* OP1 = degrees

=== Outputs ===
* OP1 = radians
* OP2 = Pi/180

=== Registers Destroyed ===
* AF, BC, DE, HL

=== Comments ===
This conversion is done by multiplying [[83Plus:RAM:8478|OP1]] by Pi/180.

== Example ==
<nowiki>B_CALL OP1Set5 ;OP1=floating point 3
B_CALL DToR ;returns with OP1=floating point 0.087266...
</nowiki>

83Plus:BCALLs:4078

2005-04-23T23:59:48Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|RToD]] [[Category:83Plus:BCALLs:By Name|RToD]] [[Category:83Plus:BCALLs:By Address|4078 - RToD]]
== Synopsis ==
'''Official Name:''' RToD

'''BCALL Address:''' 4078

Converts radians to degrees.

=== Inputs ===
* OP1 = radians

=== Outputs ===
* OP1 = degrees
* OP2 = 180/Pi

=== Registers Destroyed ===
* AF, BC, DE, HL

=== Comments ===
This conversion is done by multiplying [[83Plus:RAM:8478|OP1]] by 180/Pi. This number may exceed 360.

== Example ==
<nowiki>B_CALL OP1Set5 ;OP1=floating point 5
B_CALL RToD ;returns with OP1=floating point 286.4788
</nowiki>

83Plus:BCALLs:4075

2005-04-23T23:53:18Z

66.66.23.91: /* Comments */

[[Category:83Plus:BCALLs:By Name:FP_Math|DToR]] [[Category:83Plus:BCALLs:By Name|DToR]] [[Category:83Plus:BCALLs:By Address|4075 - DToR]]
== Synopsis ==
'''Official Name:''' DToR

'''BCALL Address:''' 4075

Converts degrees to radians.

=== Inputs ===
* OP1 = degrees

=== Outputs ===
* OP1 = radians

=== Registers Destroyed ===
* AF, BC, DE, HL

=== Comments ===
This conversion is done by multiplying [[83Plus:RAM:8478|OP1]] by Pi/180.

== Example ==
<nowiki>B_CALL OP1Set5 ;OP1=floating point 3
B_CALL DToR ;returns with OP1=floating point 0.087266...
</nowiki>

83Plus:BCALLs:4075

2005-04-23T23:52:32Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|DToR]] [[Category:83Plus:BCALLs:By Name|DToR]] [[Category:83Plus:BCALLs:By Address|4075 - DToR]]
== Synopsis ==
'''Official Name:''' DToR

'''BCALL Address:''' 4075

Converts degrees to radians.

=== Inputs ===
* OP1 = degrees

=== Outputs ===
* OP1 = radians

=== Registers Destroyed ===
* AF, BC, DE, HL

=== Comments ===
This conversion is done by multiplying OP1 by Pi/180.

== Example ==
<nowiki>B_CALL OP1Set5 ;OP1=floating point 3
B_CALL DToR ;returns with OP1=floating point 0.087266...
</nowiki>

83Plus:BCALLs:4072

2005-04-23T23:40:42Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|FPAdd]] [[Category:83Plus:BCALLs:By Name|FPAdd]] [[Category:83Plus:BCALLs:By Address|4072 - FPAdd]]
== Synopsis ==
'''Official Name:''' FPAdd

'''BCALL Address:''' 4072

Adds the floating point number in [[83Plus:RAM:8483|OP1]] to the floating point number in [[83Plus:RAM:8478|OP2]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = OP1 + OP2

=== Registers Destroyed ===
* AF, BC, DE, HL

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
B_CALL FPAdd ;returns with OP1=floating point 5
</nowiki>

83Plus:BCALLs:406F

2005-04-23T00:27:41Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|FPSub]] [[Category:83Plus:BCALLs:By Name|FPSub]] [[Category:83Plus:BCALLs:By Address|406F - FPSub]]
== Synopsis ==
'''Official Name:''' FPSub

'''BCALL Address:''' 406F

Subtracts the floating point number in [[83Plus:RAM:8478|OP2]] from the floating point number in [[83Plus:RAM:8483|OP1]] and stores the result in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number
* OP2 = floating point number

=== Outputs ===
* OP1 = OP1 - OP2
* OP2 = - OP2

=== Registers Destroyed ===
* AF, BC, DE, HL

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL OP2Set2 ;OP2=floating point 2
B_CALL FPSub ;returns with OP1=floating point 1
</nowiki>

83Plus:BCALLs:406C

2005-04-23T00:14:33Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|Minus1]] [[Category:83Plus:BCALLs:By Name|Minus1]] [[Category:83Plus:BCALLs:By Address|406C - Minus1]]
== Synopsis ==
'''Official Name:''' Minus1

'''BCALL Address:''' 406C

Decrements the floating point number in [[83Plus:RAM:8478|OP1]] by one.

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = OP1 - 1
* OP2 = floating point 1

=== Registers Destroyed ===
* AF, BC, DE, HL

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL Minus1 ;returns with OP1=floating point 2
</nowiki>

83Plus:BCALLs:4069

2005-04-22T23:51:18Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|Plus1]] [[Category:83Plus:BCALLs:By Name|Plus1]] [[Category:83Plus:BCALLs:By Address|4069 - Plus1]]
== Synopsis ==
'''Official Name:''' Plus1

'''BCALL Address:''' 4069

Increments the floating point number in [[83Plus:RAM:8478|OP1]] by one.

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = OP1 + 1
* OP2 = floating point 1

=== Registers Destroyed ===
* AF, BC, DE, HL

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL Plus1 ;returns with OP1=floating point 4
</nowiki>

83Plus:BCALLs:4066

2005-04-22T23:45:45Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|Times2]] [[Category:83Plus:BCALLs:By Name|Times2]] [[Category:83Plus:BCALLs:By Address|4066 - Times2]]
== Synopsis ==
'''Official Name:''' Times2

'''BCALL Address:''' 4066

Doubles the floating point number in [[83Plus:RAM:8478|OP1]].

=== Inputs ===
* OP1 = floating point number

=== Outputs ===
* OP1 = 2*OP1
* OP2 = original value of OP1

=== Registers Destroyed ===
* AF, BC, DE, HL

== Comments ==
This is faster than loading OP2 with 2 and using [[83Plus:BCALLs:4084|FPmult]].

== Example ==
<nowiki>B_CALL OP1Set3 ;OP1=floating point 3
B_CALL Times2 ;returns with OP1=floating point 6
</nowiki>

83Plus:BCALLs:45CD

2005-04-10T23:31:24Z

66.66.23.91: /* Comments */

[[Category:83Plus:BCALLs:By Name:Utility|PullDownChk]] [[Category:83Plus:BCALLs:By Name|PullDownChk]] [[Category:83Plus:BCALLs:By Address|45CD - PullDownChk]]
== Synopsis ==
'''Official Name:''' PullDownChk

'''BCALL Address:''' 45CD

Checks for and processes any keys relating to menus.

=== Inputs ===
* A = key press

=== Outputs ===
* A = key press (might not be the same)

=== Registers Destroyed ===
* ??

=== Comments ===
Calling this immediately after GetKey will allow OS menus to appear during execution of your program. The output of this routine may be an unprocessed key or it may be the result of a menu action. For instance if a=kenter was sent to this routine while entry 2 is highlighted in the Draw menu, the output of this routine would be a=kLine.

== Example ==
ld a,kDraw
B_CALL PullDownChk ;on LCD the draw menu should be visable
ld a,kDown
B_CALL PullDownChk ;cursor should move from entry 1 to entry 2
ld a,kEnter
B_CALL PullDownChk ;output of routine should be kLine

83Plus:BCALLs:45CD

2005-04-10T23:30:41Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:Utility|PullDownChk]] [[Category:83Plus:BCALLs:By Name|PullDownChk]] [[Category:83Plus:BCALLs:By Address|45CD - PullDownChk]]
== Synopsis ==
'''Official Name:''' PullDownChk

'''BCALL Address:''' 45CD

Checks for and processes any keys relating to menus.

=== Inputs ===
* A = key press

=== Outputs ===
* A = key press (might not be the same)

=== Registers Destroyed ===
* ??

=== Comments ===
Calling this immediately after GetKey will allow OS menus to appear during execution of your program. The output of this routine may an unprocessed key or it may be the result of a menu action. For instance if a=kenter was sent to this routine while entry 2 is highlighted in the Draw menu, the output of this routine would be a=kLine.

== Example ==
ld a,kDraw
B_CALL PullDownChk ;on LCD the draw menu should be visable
ld a,kDown
B_CALL PullDownChk ;cursor should move from entry 1 to entry 2
ld a,kEnter
B_CALL PullDownChk ;output of routine should be kLine

83Plus:BCALLs:4003

2005-04-04T14:42:56Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:Hook|FontHook]] [[Category:83Plus:BCALLs:By Name|FontHook]] [[Category:83Plus:BCALLs:By Address|4003 - FontHook]]
== Synopsis ==
'''Official Name:''' FontHook

'''BCALL Address:''' 4003

Calls the routine currently set as the font hook routine.

=== Inputs ===
* font hook set

=== Outputs ===
* return value of font hook routine

=== Registers Destroyed ===
* ??

83Plus:BCALLs:4267

2005-04-04T03:20:54Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|DecO1Exp]] [[Category:83Plus:BCALLs:By Name|DecO1Exp]] [[Category:83Plus:BCALLs:By Address|4267 - DecO1Exp]]
== Synopsis ==
'''Official Name:''' DecO1Exp

'''BCALL Address:''' 4267

Decrements op1's exponent.

=== Inputs ===
* op1 = floating point number

=== Outputs ===
* op1 's exponent decremented

=== Registers Destroyed ===
* A

== Comments ==
This function decrements the exponent of op1. Unlike FDiv10, checks are not performed to prevent an underflow.

== Example ==
Suppose op1=00h,80h,10h,00h,...
After B_CALL FDiv100, op1=00h,7Fh,10h,00h,...

Suppose op1=00h,00h,10h,00h,...
After B_CALL FDiv100, op1=00h,FFh,10h,00h,...

83Plus:BCALLs:426A

2005-04-04T03:20:36Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|IncO1Exp]] [[Category:83Plus:BCALLs:By Name|IncO1Exp]] [[Category:83Plus:BCALLs:By Address|4269 - IncO1Exp]]
== Synopsis ==
'''Official Name:''' IncO1Exp

'''BCALL Address:''' 4269

Increments op1's exponent.

=== Inputs ===
* op1 = floating point number

=== Outputs ===
* op1 's exponent incremented

=== Registers Destroyed ===
* A

== Comments ==
This function increments the exponent of op1. Checks are not performed to prevent an overflow.

== Example ==
Suppose op1=00h,80h,10h,00h,...
After B_CALL FDiv100, op1=00h,81h,10h,00h,...

Suppose op1=00h,FFh,10h,00h,...
After B_CALL FDiv100, op1=00h,00h,10h,00h,...

83Plus:BCALLs:4267

2005-04-04T03:18:25Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Util|DecO1Exp]] [[Category:83Plus:BCALLs:By Name|DecO1Exp]] [[Category:83Plus:BCALLs:By Address|4267 - DecO1Exp]]
== Synopsis ==
'''Official Name:''' DecO1Exp

'''BCALL Address:''' 4267

Decrements op1's exponent.

=== Inputs ===
* op1 = floating point number

=== Outputs ===
* op1 's exponent decremented

=== Registers Destroyed ===
* A

== Comments ==
This function divides decrements the exponent of op1. Unlike FDiv10, checks are not performed to prevent an underflow.

== Example ==
Suppose op1=00h,80h,10h,00h,...
After B_CALL FDiv100, op1=00h,7Fh,10h,00h,...

Suppose op1=00h,00h,10h,00h,...
After B_CALL FDiv100, op1=00h,FFh,10h,00h,...

83Plus:BCALLs:4264

2005-04-04T03:02:53Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|FDiv10]] [[Category:83Plus:BCALLs:By Name|FDiv10]] [[Category:83Plus:BCALLs:By Address|4264 - FDiv10]]
== Synopsis ==
'''Official Name:''' FDiv10

'''BCALL Address:''' 4264

Performs a fast divide by 10 on op1.

=== Inputs ===
* op1 = floating point number

=== Outputs ===
* op1 = op1 / 10

=== Registers Destroyed ===
* A

== Comments ==
This function divides op1 by 10. This is done by decrementing the exponent. Checks are performed to prevent an underflow. This is much faster than FPDiv when op2=10.

== Example ==
Suppose op1=00h,80h,10h,00h,...
After B_CALL FDiv100, op1=00h,7Fh,10h,00h,...

83Plus:BCALLs:4261

2005-04-04T03:01:10Z

66.66.23.91:

[[Category:83Plus:BCALLs:By Name:FP_Math|FDiv100]] [[Category:83Plus:BCALLs:By Name|FDiv100]] [[Category:83Plus:BCALLs:By Address|4261 - FDiv100]]
== Synopsis ==
'''Official Name:''' FDiv100

'''BCALL Address:''' 4261

Performs a fast divide by 100 on op1.

=== Inputs ===
* op1 = floating point number

=== Outputs ===
* op1 = op1 / 100

=== Registers Destroyed ===
* A

== Comments ==
This function divides op1 by 100. This is done by twice decrementing the exponent. Checks are performed to prevent an underflow. This is much faster than FPDiv when op2=100.

== Example ==
Suppose op1=00h,80h,10h,00h,...
After B_CALL FDiv100, op1=00h,7Eh,10h,00h,...

83Plus:BCALLs:801E

2005-03-28T03:50:18Z

66.66.23.91: /* Example */

== Synopsis ==
'''Official Name:''' BigNumCompare

'''BCALL Address:''' 801E

Checks to see if two large integers are equal.

=== Inputs ===
* HL: Address of first integer to compare.
* DE: Address of second integer to compare.


=== Outputs ===
* Zero Flag: Set if integers are equal

=== Destroys ===
* ??

== Comments ==
This B_CALL compares two large integers. This BCALL is used by the OS in its digital signature verification routines to compare the computed MD5 against the decrypted signature.
The BCALL can actually be used to compare any two data structures in RAM such as strings but must follow the large integer format that the OS uses in its verification routines. The first byte must be the length of the integer in bytes. After the size byte, the number can be listed in little endian form.

== Example ==
Suppose the contents of RAM were as follows:

8100h: 04 12 34 56 78

8105h: 04 AA BB CC DD

810Ah: 03 12 34 56 78

The large integer stored at 8100h is the integer 78563412h and the integer stored at 8105h is the integer DDCCBBAAh. Below is code to compare the integers above.

ld hl,8100h
ld de,8105h
B_CALL BigNumCompare ;should return nz

ld hl,8100h
ld de,810Ah
B_CALL BigNumCompare ;should return z

83Plus:BCALLs:801E

2005-03-28T03:49:22Z

66.66.23.91:

== Synopsis ==
'''Official Name:''' BigNumCompare

'''BCALL Address:''' 801E

Checks to see if two large integers are equal.

=== Inputs ===
* HL: Address of first integer to compare.
* DE: Address of second integer to compare.


=== Outputs ===
* Zero Flag: Set if integers are equal

=== Destroys ===
* ??

== Comments ==
This B_CALL compares two large integers. This BCALL is used by the OS in its digital signature verification routines to compare the computed MD5 against the decrypted signature.
The BCALL can actually be used to compare any two data structures in RAM such as strings but must follow the large integer format that the OS uses in its verification routines. The first byte must be the length of the integer in bytes. After the size byte, the number can be listed in little endian form.

== Example ==
Suppose the contents of RAM were as follows:

8100h: 04 12 34 56 78
8105h: 04 AA BB CC DD
810Ah: 03 12 34 56 78

The large integer stored at 8100h is the integer 78563412h and the integer stored at 8105h is the integer DDCCBBAAh. Below is code to compare the integers above.

ld hl,8100h
ld de,8105h
B_CALL BigNumCompare ;should return nz

ld hl,8100h
ld de,810Ah
B_CALL BigNumCompare ;should return z