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Re: Crosspost: Did the cpu influence the display?

Subject: Re: Crosspost: Did the cpu influence the display?
From: Linards Ticmanis <ticmanis@gmx.de>
Date: Wed, 28 Dec 2005 10:55:47 +0100
In-reply-to: <pan.2005.12.26.22.33.01.159503@emeraldcity.gov>
Newsgroups: comp.sys.sinclair, comp.sys.tandy, comp.sys.atari.8bit, comp.sys.apple2, comp.sys.cbm
Organization: Arcor
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The Wizard of Oz wrote:

The M$ card had a special routine
which allowed the programmer to directly access the Apples soft switches.
The RAM wasn't on the CP/M card. The card just rearranged the available
memory from the Apple and had a limited amount of RAM and I guess ROM to
replace what was used by the Apple.

If you're talking about the "Microsoft Softcard", it had neither RAM norROM on the card. Only a Z80 processor and a good bit of 74LSxx glue logic.


--
Linards Ticmanis

References:
- Crosspost: Did the cpu influence the display?
  - From: "Bill H" <bill@ts1000.us>
- Re: Crosspost: Did the cpu influence the display?
  - From: The Wizard of Oz <wizard@emeraldcity.gov>

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