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ZX81 info needed [message #128089] Fri, 11 October 2013 18:11
mth is currently offline  mth
Messages: 3
Registered: June 2013
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Message-ID: <211@ihnp1.UUCP>
Date: Thu, 16-Feb-84 09:56:16 EST
Article-I.D.: ihnp1.211
Posted: Thu Feb 16 09:56:16 1984
Date-Received: Fri, 17-Feb-84 03:06:55 EST
Organization: AT&T Bell Labs, Naperville, IL
Lines: 22

I would appreciate the following information on the Timex/Sinclair ZX81
or TS-1000 computer:

1. Are the schematics for the computer and the 16K RAM pack available
2. Does anyone have any documentation on the SLC/ULA chip on the main board?
3. Is composite video signal available anywhere on the board?
4. On poer-up, is it possible to start execution in ROM other than the
   OS/BASIC, and if so, how?
5. Does anyone have official or disassembled source of the OS/BASIC?
6. Is there any documentation of user callable routines in the kernel?

I would appreciate any information on the above.  I will collect and post
the responses.  Thank you.

					M. Horbal ih1b230 x3425
					ihnp1!mth, ihnp3!mth

				Mark T. Horbal IH1b230 x3425
				ihnp1!mth, ihnp3!mth

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