83Plus:Ports:15 - Revision history

Dr. D'nar: Added information about undocumented flags bit, because I can't think of a better place for it.

2014-12-22T17:22:51Z

Added information about undocumented flags bit, because I can't think of a better place for it.

Dr. D'nar: Information on date codes

2014-10-26T00:06:45Z

Information on date codes

Dr. D'nar: Added note about the TI-84+CSE

2013-02-20T04:10:58Z

Added note about the TI-84+CSE

Dr. D'nar: Noted that the TI-83+SE has an external RAM chip.

2012-12-22T19:53:46Z

Noted that the TI-83+SE has an external RAM chip.

Dr. D'nar at 21:34, 17 February 2012

2012-02-17T21:34:50Z

Thepenguin77 at 19:40, 3 November 2011

2011-11-03T19:40:49Z

Thepenguin77 at 15:49, 11 July 2011

2011-07-11T15:49:49Z

Thepenguin77 at 15:40, 11 July 2011

2011-07-11T15:40:44Z

Thepenguin77: Created page with '15 - ASIC Version ASIC Version {{Protected Port}} == Synopsis == '''Port Number:''' 15h '''Function:''' A…'

2011-07-11T15:39:31Z

Created page with '15 - ASIC Version ASIC Version {{Protected Port}} == Synopsis == '''Port Number:''' 15h '''Function:''' A…'

New page

[[Category:83Plus:Ports:By_Address|15 - ASIC Version]] [[Category:83Plus:Ports:By_Name|ASIC Version]]
{{Protected Port}}

== Synopsis ==
'''Port Number:''' 15h

'''Function:''' ASIC Version

This port reports the ASIC version from which the number of ram pages and USB driver revision can be determined. On the 83+, it does something different.

=== Read Values ===
* 44 - TI-REF 83PLUSB/TA2 - Uses old USB driver and has 128KB of RAM
* 45 - TI-REF 84PLUSB/TA3 - Uses new USB driver and has 128KB of RAM
* 55 - TI-REF 84PLC/TA1 - Uses new USB driver and has 48KB of RAM

=== Write Values ===
No effect

== Comments ==
Even though this port is in the protected range, it can't be written to. So there's really no reason to call it protected.

← Older revision		Revision as of 17:22, 22 December 2014
Line 9:		Line 9:
	This port reports the ASIC version from which the number of RAM pages and USB driver revision can be determined. This works for the TI-83+SE, but not the TI-83+, so first check bit 7 of port 2 before using this to check the HW capabilities. The TI-84+ and TI+84+SE use the exact same ASICs (44h, 45h, 55h); see port 21 for how to check how much flash there is. The TI-84+CSE uses the 45h ASIC. The TI-84+/SE switched to the TA1 ASIC on either production run G or H, which was sometime between late 2006 and early 2007. (The production run is given in the second half of the serial number on the back of a calculator, which has the form X-1234Y. X is the manufacturing plant, 12 is the month, 34 is the year, and Y is the production run.)		This port reports the ASIC version from which the number of RAM pages and USB driver revision can be determined. This works for the TI-83+SE, but not the TI-83+, so first check bit 7 of port 2 before using this to check the HW capabilities. The TI-84+ and TI+84+SE use the exact same ASICs (44h, 45h, 55h); see port 21 for how to check how much flash there is. The TI-84+CSE uses the 45h ASIC. The TI-84+/SE switched to the TA1 ASIC on either production run G or H, which was sometime between late 2006 and early 2007. (The production run is given in the second half of the serial number on the back of a calculator, which has the form X-1234Y. X is the manufacturing plant, 12 is the month, 34 is the year, and Y is the production run.)

		+	Although this page isn't relevant to the TI-83+, I don't know of a better place to put this, so. . . .
		+	The TI-83+ models containing discrete Z80s have their Z80s make bits 3 and 5 (the unused bits) of the flags register copies of the results. But, later TI-83+es have their Z80s integrated with the ASIC. They, and the TI-83+SE and TI-84+/C/SE series all have their Z80s always return 0 on those bits. I don't know what this means in terms of what Z80 design is being used---is it a knock-off, or did Zilog just issue a different design for embedded Z80s? Also, what does this mean for the LD A, I/R interrupt-enable-detection bug?

	=== Read Values ===		=== Read Values ===

← Older revision		Revision as of 00:06, 26 October 2014
Line 7:		Line 7:
	'''Function:''' ASIC Version		'''Function:''' ASIC Version

−	This port reports the ASIC version from which the number of RAM pages and USB driver revision can be determined. This works for the TI-83+SE, but not the TI-83+, so first check bit 7 of port 2 before using this to check the HW capabilities. The TI-84+ and TI+84+SE use the exact same ASICs (44h, 45h, 55h); see port 21 for how to check how much flash there is. The TI-84+CSE uses the 45h ASIC.	+	This port reports the ASIC version from which the number of RAM pages and USB driver revision can be determined. This works for the TI-83+SE, but not the TI-83+, so first check bit 7 of port 2 before using this to check the HW capabilities. The TI-84+ and TI+84+SE use the exact same ASICs (44h, 45h, 55h); see port 21 for how to check how much flash there is. The TI-84+CSE uses the 45h ASIC. The TI-84+/SE switched to the TA1 ASIC on either production run G or H, which was sometime between late 2006 and early 2007. (The production run is given in the second half of the serial number on the back of a calculator, which has the form X-1234Y. X is the manufacturing plant, 12 is the month, 34 is the year, and Y is the production run.)

@@ Line 7: / Line 7: @@
 '''Function:''' ASIC Version
-This port reports the ASIC version from which the number of RAM pages and USB driver revision can be determined. This works for the TI-83+SE, but not the TI-83+, so first check bit 7 of port 2 before using this to check the HW capabilities. Also see port 21 for how to check how much flash there is.
+This port reports the ASIC version from which the number of RAM pages and USB driver revision can be determined. This works for the TI-83+SE, but not the TI-83+, so first check bit 7 of port 2 before using this to check the HW capabilities. The TI-84+ and TI+84+SE use the exact same ASICs (44h, 45h, 55h); see port 21 for how to check how much flash there is. The TI-84+CSE uses the 45h ASIC.
 === Read Values ===

@@ Line 1: / Line 1: @@
-[[Category:83Plus:Ports:By_Address|15 - ASIC Version]] [[Category:83Plus:Ports:By_Name|ASIC Version]]
+[[Category:83Plus:Ports:By_Address|15 - ASIC Version]] [[Category:83Plus:Ports:By_Name|ASIC Version]] [[Category:83Plus:General Hardware Information|HW Version IDs]]
 {{SE-Only Port|05}}
@@ Line 7: / Line 7: @@
 '''Function:''' ASIC Version
-This port reports the ASIC version from which the number of ram pages and USB driver revision can be determined.
+This port reports the ASIC version from which the number of RAM pages and USB driver revision can be determined. This works for the TI-83+SE, but not the TI-83+, so first check bit 7 of port 2 before using this to check the HW capabilities. Also see port 21 for how to check how much flash there is.
 === Read Values ===

← Older revision		Revision as of 15:40, 11 July 2011
Line 1:		Line 1:
	[[Category:83Plus:Ports:By_Address\|15 - ASIC Version]] [[Category:83Plus:Ports:By_Name\|ASIC Version]]		[[Category:83Plus:Ports:By_Address\|15 - ASIC Version]] [[Category:83Plus:Ports:By_Name\|ASIC Version]]
−	~~{{Protected Port}}~~

	== Synopsis ==		== Synopsis ==

@@ Line 10: / Line 10: @@
 === Read Values ===
-* 33 - TI-REF 83PL2M/TA2 - No USB driver and has 128KB of RAM
+* 33 - TI-REF 83PL2M/TA2 - No USB driver and no on-ASIC RAM; the RAM is in a separate 128 K RAM chip.
 * 44 - TI-REF 83PLUSB/TA2 - Uses old USB driver and has 128KB of RAM
 * 45 - TI-REF 84PLUSB/TA3 - Uses new USB driver and has 128KB of RAM