83Plus:Ports:18 - Revision history

FloppusMaximus: corrected endianness

2005-07-25T01:17:46Z

corrected endianness

FloppusMaximus at 05:19, 30 March 2005

2005-03-30T05:19:47Z

Dan Englender: Fixed category port range

2005-03-28T18:07:50Z

Fixed category port range

Dan Englender: Added categories

2005-03-28T17:58:13Z

Added categories

JasonM: give the function...nice docs by the way

2005-03-28T02:48:48Z

give the function...nice docs by the way

Dan Englender: Created MD5 ports page

2005-03-27T18:57:01Z

Created MD5 ports page

New page

== Synopsis ==
'''Port Numbers:''' 18h-1Fh

'''Function:'''

These ports access the MD5 calculation hardware present on the SE and 84P calculators. These ports will calculate the FF, GG, HH, and II functions required for MD5 digest generation.

=== Read Values ===
* Port 1Ch: MSB of calculated value
* Port 1Dh: next byte of calculated value
* Port 1Eh: next byte of calculated value
* Port 1Fh: LSB of calculated value

=== Write Values ===
* Port 18h: Sets the MD5 register A value. This is a 32-bit output, output values to the port one byte at a time, MSB first.
* Port 19h: Sets the B register. 32-bit.
* Port 1Ah: Sets the C register. 32-bit.
* Port 1Bh: Sets the D register. 32-bit.
* Port 1Ch: Sets the X register. 32-bit.
* Port 1Dh: Sets the AC register. 32-bit.
* Port 1Eh: Sets the S register. 8-bit.
* Port 1Fh: Selects whether to compute the FF, GG, HH, or II operation. Set port to 0, 1, 2, or 3 respectively.

== Comments ==
This port does not exist on the standard 83 Plus, on which the operations are computed in software. For more information on MD5, see [http://www.faqs.org/rfcs/rfc1321.html rfc1321].

@@ Line 1: / Line 1: @@
-[[Category:83Plus:Ports:By_Address|18-1F - MD5 Calculation]]
+[[Category:83Plus:Ports:By_Address|18-1F - MD5 Calculation]] [[Category:83Plus:Ports:By_Name|MD5 Calculation]]
 [[Category:83Plus:Ports:By_Name|MD5 Calculation]]
 == Synopsis ==
 '''Port Numbers:''' 18h-1Fh

@@ Line 1: / Line 1: @@
-[[Category:83Plus:Ports:By_Address|18 - MD5 Calculation]]
+[[Category:83Plus:Ports:By_Address|18-1F - MD5 Calculation]]
 [[Category:83Plus:Ports:By_Name|MD5 Calculation]]
 == Synopsis ==

← Older revision		Revision as of 17:58, 28 March 2005
Line 1:		Line 1:
		+	[[Category:83Plus:Ports:By_Address\|18 - MD5 Calculation]]
		+	[[Category:83Plus:Ports:By_Name\|MD5 Calculation]]
	== Synopsis ==		== Synopsis ==
	'''Port Numbers:''' 18h-1Fh		'''Port Numbers:''' 18h-1Fh

@@ Line 8: / Line 8: @@
 === Read Values ===
-* Port 1Ch: MSB of calculated value
+* Port 1Ch: LSB of calculated value
 * Port 1Dh: next byte of calculated value
 * Port 1Eh: next byte of calculated value
-* Port 1Fh: LSB of calculated value
+* Port 1Fh: MSB of calculated value
 === Write Values ===
-* Port 18h: Sets the MD5 register A value.  This is a 32-bit output, output values to the port one byte at a time, MSB first.
+* Port 18h: Sets the MD5 register A value.  This is a 32-bit output, output values to the port one byte at a time, LSB first.
 * Port 19h: Sets the B register.  32-bit.
 * Port 1Ah: Sets the C register.  32-bit.

@@ Line 2: / Line 2: @@
 '''Port Numbers:''' 18h-1Fh
-'''Function:'''
+'''Function:''' MD5 Calculation Ports
 These ports access the MD5 calculation hardware present on the SE and 84P calculators.  These ports will calculate the FF, GG, HH, and II functions required for MD5 digest generation.