RetroBrew Computers Forum: General Discussion » General Instrument CTS256A-AL2 vs. Microchip CTS256AL2

Home » RBC Forums » General Discussion » General Instrument CTS256A-AL2 vs. Microchip CTS256AL2

Show: Today's Messages :: Show Polls :: Message Navigator

Re: Is the PIC/TMS7041 field programmable? [message #10340 is a reply to message #10339]

Mon, 08 May 2023 08:25

jayindallas
Messages: 110
Registered: June 2021

Senior Member

lynchaj wrote: "...Is the PIC7041/TMS7041 field programmable?..."
My TMS 7000 Series design projects were 7042-based processor, not the 7041.
The TMS7000 had two EPROM prototyping constructs:
A) EProm window,
B) EProm piggyback (28 pin socket into ceramic)

I still have these TMS7000 Series Items:
ITEM-1 :: "TMS7000 Family Data Manual" | publication ID "SND001B" | version "June 1986, Revision B"
ITEM-2 :: "TMS7000 Programmer's Pocket Reference" | publication ID "SPNF002A"
ITEM-3 :: EProm window: " SE77C42JDL | LBW 8814 | 1986 TI | 7436014 Japan "
ITEM-4 :: EProm piggyback: " SE70CP160J | MSA71000 Japan "

In ITEM-1, the TMS7041 is referenced in the appendix in section C.2 page C-3. It lists that EProm piggyback pinout (TMS and EPROM socket) and lists the part as a "SE70P161." There are 6 pages that describe the TMS7041; I'll scan them and attach a zip file of images this evening.

lynchaj wrote: "...it is unclear to me if the ROM is programmable or not. OTP makes the most sense..."

I'll read ITEM-1 and ITEM-2 Today and see if I can answer that definitively; at least in regard to the TMS series, the internal ROM was masked ROM.
--------------------------------------------------
More documents are available at the directory link below:
https://bitsavers.org/components/ti/TMS7000/

	Index of /components/ti/TMS7000
Name____________________________________________________________________	Last_modified___
brochure/									2024-03-24 07:29
datasheet/									2024-03-24 07:47
evm/										2024-03-24 07:33
xds22/										2024-03-24 07:29
SPND001A_TMS7000_Family_Data_Manual_1983.pdf					2021-07-31 15:30
SPND001B_TMS7000_Family_Data_Manual_1986.pdf					2024-03-24 08:02
SPND001C_TMS7000_Family_Data_Manual_1989.pdf					2017-08-04 13:50
SPNF002A_TMS7000_Pocket_Reference_198402.pdf					2024-03-24 07:48
SPNU002B_TMS7000_Assembly_Language_Programmers_Guide_198407.pdf			2024-03-24 07:28
TMS7000_Family_Microarchitecture_-_Nov_1982.pdf					2009-07-16 16:49
TMS7742_to_TMS77C82_Conversion.pdf						2024-03-24 07:48
TMS77C01_PIT_Users_Manual_198408.pdf						2024-03-24 07:28
TMS77C82_EPROM_Erratum.pdf							2024-03-24 07:28
				
	Index of /components/ti/TMS7000/brochure
Name____________________________________________________________________	Last_modified___
CMF134_TMS7K_Brochure_1988.pdf							2024-03-24 07:29
MPL_54_TMS7K_Brochure_1983.pdf							2024-03-24 07:29

	Index of /components/ti/TMS7000/datasheet
Name____________________________________________________________________	Last_modified___
TMS7742_198511.pdf								2024-03-24 07:29
TMS7742JD_198512.pdf								2024-03-24 07:29
TMS77C82_198802.pdf								2024-03-24 07:47

	Index of /components/ti/TMS7000/evm
Name____________________________________________________________________	Last_modified___
electrickery.nl/								2024-03-24 07:28
EvaluationModuleROMs.zip							2024-03-24 07:28
RTC-EMV7000C_Schematic.pdf							2024-03-24 07:28
SPNU007_TMS7000_Evaluation_Module_Users_Guide_1986.pdf				2024-03-24 07:28
	Index of /components/ti/TMS7000/xds22
Name____________________________________________________________________	Last_modified___
SPDU017_XDS_22_Installation_And_Operation_Guide_198310.pdf			2024-03-24 07:29
SPDU019_XDS_Breakpoint_Trace_Installation_And_Operation_Guide_198310.pdf	2024-03-24 07:29
SPDU020_XDS_TMS7000_Emulator_Hardware_198403.pdf				2024-03-24 07:29

Direct-Link, Texas Instruments TMS7000 Series Files on bitsavers.org are:
SPND001A_TMS7000_Family_Data_Manual_1983.pdf
SPND001B_TMS7000_Family_Data_Manual_1986.pdf
SPND001C_TMS7000_Family_Data_Manual_1989.pdf
TMS7000_Family_Microarchitecture_-_Nov_1982.pdf
SPNU002B_TMS7000_Assembly_Language_Programmers_Guide_198407. pdf

Attachment: ITEMS_1-4_images.zip
(Size: 611.67KB, Downloaded 158 times)
Attachment: TMS7041_Appendix_C_six_pages.zip
(Size: 1.79MB, Downloaded 158 times)

[Updated on: Thu, 02 May 2024 10:26]

Report message to a moderator

[Message index]

		General Instrument CTS256A-AL2 vs. Microchip CTS256AL2 By: lynchaj on Fri, 28 April 2023 03:28
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: jayindallas on Fri, 28 April 2023 13:10
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: scruss on Sat, 06 May 2023 16:46
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: lynchaj on Sat, 06 May 2023 18:13
		Re: github project may have extracted the CTS256A-AL2 code By: jayindallas on Sat, 06 May 2023 20:45
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: gkaufman on Sun, 07 May 2023 07:11
		Re: Programming the Naval algorithm as a CTSx for PIC/TMS7000 or otherwise By: jayindallas on Sun, 07 May 2023 16:26
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: lynchaj on Mon, 08 May 2023 04:04
		Re: Is the PIC/TMS7041 field programmable? By: jayindallas on Mon, 08 May 2023 08:25
		Re: Is the PIC/TMS7041 field programmable? By: lynchaj on Mon, 08 May 2023 12:50
		Re: No source of new-old CTS256A-AL2 economical micro solutions By: jayindallas on Mon, 08 May 2023 16:37
		Re: No source of new-old CTS256A-AL2 economical micro solutions By: lynchaj on Tue, 09 May 2023 04:41
		Re: No source of new-old CTS256A-AL2 economical micro solutions By: scruss on Sun, 14 May 2023 09:40
		Re: No source of new-old CTS256A-AL2 economical micro solutions By: jayindallas on Sun, 14 May 2023 22:19
		Re: No source of new-old CTS256A-AL2 economical micro solutions By: scruss on Wed, 17 May 2023 07:11
		Re: No source of new-old CTS256A-AL2 economical micro solutions By: jayindallas on Wed, 17 May 2023 11:03
		Emulating a TMS/PIC7000 (CTS256A-AL2) in a new MCU... By: jayindallas on Sat, 20 May 2023 09:12
		CHAPTER 01 :: "Introduction to Hardware Emulation of the 7000 Series" By: jayindallas on Sun, 21 May 2023 11:08
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: lynchaj on Mon, 25 March 2024 11:23
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: lynchaj on Wed, 27 March 2024 19:11
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: lynchaj on Sun, 31 March 2024 08:46
		7000 Series Unobtainium may be OBTAINium? By: jayindallas on Sun, 31 March 2024 11:50
		Re: General Instruments CTS256A-AL2 vs. Microchip CTS256AL2 By: lynchaj on Sun, 31 March 2024 17:38
		Tables of Various 7000 Series Device Features/Specifications By: jayindallas on Sun, 31 March 2024 19:41
		Re: TMS7000 Series Devices (Manual section 2.1) By: lynchaj on Mon, 01 April 2024 12:01
		Prototyping 7xxx Devices appear to support External Memory?! By: jayindallas on Mon, 01 April 2024 18:37
		Re: TMS7000 Series Devices (Manual section 2.1) By: lynchaj on Wed, 03 April 2024 03:57
		Re: TMS7000 Series Devices (Manual section 2.1) By: lynchaj on Thu, 04 April 2024 04:59
		CTS256 resurrection from old 70xx & SP-0256* too?! By: jayindallas on Thu, 04 April 2024 08:56
		Re: TMS7000 Series Devices (Manual section 2.1) By: lynchaj on Thu, 04 April 2024 10:00
		70x1 Memory Access Timing: Internal -versus- External Access By: jayindallas on Thu, 04 April 2024 11:03
		Re: 70x1 Memory Access Timing: Internal -versus- External Access By: lynchaj on Fri, 05 April 2024 06:07
		TMS7000 Series with Custom Micro-Coded Instructions By: jayindallas on Fri, 05 April 2024 21:14
		Re: TMS7000 Series with Custom Micro-Coded Instructions By: lynchaj on Sat, 06 April 2024 16:52
		Daisy 256 & the Speech Processor By: jayindallas on Sat, 06 April 2024 21:32
		Re: Daisy 256 & the Speech Processor By: lynchaj on Sun, 07 April 2024 07:08
		Reverse-Engineering the Speech Processor ROM By: jayindallas on Sun, 07 April 2024 11:24
		Re: Reverse-Engineering the Speech Processor ROM By: lynchaj on Sun, 07 April 2024 18:13
		Re: Reverse-Engineering the Speech Processor ROM By: lynchaj on Mon, 08 April 2024 03:46
		Re: Reverse-Engineering the Speech Processor ROM By: jayindallas on Mon, 08 April 2024 14:23
		Re: Reverse-Engineering the Speech Processor ROM By: lynchaj on Tue, 09 April 2024 04:22
		Re: Reverse-Engineering the Speech Processor ROM By: lynchaj on Tue, 09 April 2024 09:49
		Re: Reverse-Engineering the Speech Processor ROM By: lynchaj on Tue, 09 April 2024 10:50
		Re: Reverse-Engineering the Speech Processor ROM By: jayindallas on Wed, 10 April 2024 20:40
		Re: Reverse-Engineering the Speech Processor ROM By: lynchaj on Thu, 11 April 2024 09:56
		Re:TMS700x Memory Interface Mode Timing Spreadsheet UPDATE By: jayindallas on Fri, 12 April 2024 08:16
		Re: What TMS7000 Family Data Manual Version Am I Using? By: lynchaj on Fri, 12 April 2024 13:54
		Re: What TMS7000 Family Data Manual Version Am I Using? By: lynchaj on Fri, 19 April 2024 03:37
		DAISY256 works By: lynchaj on Mon, 22 April 2024 03:36
		Re: DAISY256 works By: lynchaj on Mon, 22 April 2024 12:57
		Re: DAISY256 works By: lynchaj on Mon, 22 April 2024 15:10
		Re: DAISY256 works By: lynchaj on Tue, 23 April 2024 03:54
		Re: DAISY256 works By: lynchaj on Tue, 23 April 2024 12:02
		Re: DAISY256 works By: jayindallas on Tue, 23 April 2024 12:31
		Re: DAISY256 works By: lynchaj on Sat, 27 April 2024 12:12
		Baud Rate Tables for 70x1, 70x2, 70Cx2 By: jayindallas on Sun, 28 April 2024 21:43
		Re: DAISY256 works By: lynchaj on Mon, 29 April 2024 04:16
		Re: DAISY256 works By: plasmo on Mon, 29 April 2024 05:52
		Re: DAISY256 works By: jayindallas on Mon, 29 April 2024 15:09
		Re: DAISY256 works By: plasmo on Mon, 29 April 2024 20:25
		Re: DAISY256 works By: lynchaj on Tue, 30 April 2024 04:44
		Re: DAISY256 works By: berzerkula on Mon, 06 May 2024 19:31
		Re: DAISY256 works By: lynchaj on Tue, 07 May 2024 04:50
		Re: DAISY256 works By: berzerkula on Tue, 14 May 2024 22:37
		Re: DAISY256 works By: lynchaj on Wed, 15 May 2024 03:38
		Re: DAISY256 works By: scruss on Wed, 24 July 2024 15:46
		Re: DAISY256 works By: berzerkula on Tue, 26 November 2024 17:17
		Re: DAISY256 works By: lynchaj on Sun, 16 June 2024 11:21
		Re: DAISY256 works By: berzerkula on Mon, 15 July 2024 23:57

Previous Topic:	Dave Runkle's front panel for the SBC6120-RBC
Next Topic:	Resurrecting EaZy80, a forgotten glue-less 22MHz Z80 SBC.

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Sep 27 03:01:28 PDT 2025

Total time taken to generate the page: 0.19996 seconds