CLASSICCMP digest 79

From: Larry Anderson & Diane Hare <>
Date: Wed Jun 11 01:00:37 1997

>From: Doug Spence <>
>Subject: C64 CP/M carts (was: Re: Yet another weekend haul story)

>On Mon, 2 Jun 1997, George Lin wrote:

>> At 11:24 PM 6/1/97 -0700, you wrote:
>> ><...>
>> >> accessories including a CP/M cartridge for C64
>> >
>> >A CP/M _carthridge_? Awesome.
>> I just tried it yesterday. Pretty cool. The Z80 is in the cartridge. The
>> package comes with a CP/M 2.2 diskette for 1541 and a condensed CP/M manual
>> by Commodore (copyright 1983). There is a K-Mart price tag on the original
>> box that reads $54. Not bad.

NOTE: the Commodore CP/M Cart is only usable on the oldest of the 64s
(usually models with the 5-pin DIN plug for video. It would seem that
when Commodore debugged some video problems they tweaked the system
speed slightly which made the CP/M cartridge unusable.

>This reminds me... I also have a Z80 cartridge for the C64. But it's not
>the one from Commodore. It's from a company called DATA 20 Corporation.

>I haven't been able to get it to work. It has what looks like a connector
>for a power supply on the back, but I didn't get the PS with it. It also
>came without any disks, though it did have a cassette in the box with it,
>which says "Use side A for Commodore 64/Use side B for VIC 20".

>It's a Z-80 Video Pak, that combines the Z80 processor AND an 80-column
>display adapter into one (big fat) cartridge.

Are you sure the plug isn't for some sort of video cable contraption?
(the Data-20 carts usually sported an 80 column composite video output.)

>To quote from the box:

> The Z-80 Video Pak brings the convenience of an 80 column screen and
> the power of a CP/M compatible operating system to the Commodore 64.

> Designed to be used with a monitor, the Z-80 Video Pak lets the
> Commodore 64 owner switch to a 40 or 80 column screen in black and
> white, or back to the standard color screen. All switching is done
> through software and no cables need to be moved.

> The Z-80 Video Pak has its own Z-80 microprocessor and operating
> system which allows the 64 to run CP/M software formatted for the
> Commodore 1541 disk drive. A Terminal mode which brings communication
> with central data bases is included at no extra cost. The Z-80 Video
> Pak also supports the advanced screen handling features of all Video
> Pak models such as erase to the end of line, erase to end of screen,
> and dump screen to printer.

>If anyone out there knows this thing's power requirements (AAAGH! Another
>wall-wart!) and where to get CP/M disks in 1541 format, please tell. :)

If there is power needed for it, I haven't seen anything mentioning
requirements... yet.

          Larry Anderson
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Received on Wed Jun 11 1997 - 01:00:37 BST

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