ZX81 info needed

Article View: net.micro.zx

Article #69

#69

From: M. Horbal
Date: Thu, 16 Feb 1984 14:56

22 lines
1306 bytes

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
   anywhere?
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

Technical Details

Message-ID: <211@ihnp1.UUCP>

Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!ihnp4!ihnp1!mth

Show Full Headers

Complete Article Headers

Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 exptools 1/6/84; site ihnp1.UUCP
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!mhuxl!houxm!ihnp4!ihnp1!mth
From: mth@ihnp1.UUCP (M. Horbal)
Newsgroups: net.micro.zx
Subject: ZX81 info needed
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