BACK-OT: which CP/M machine is best (to copy)? :)

From: Doug Jackson <>
Date: Mon Aug 26 20:03:00 2002

I vividly remember my Pulsar Electronics Little-Big-Board.

It was an STD bus board, sporting a 4Mhz Z-80, 64K ram, 8" floppy disk
interface (1.2Mb!!!), RTC, and dual serial ports.

The board came with a full BIOS listing, as well as the device specific CP/M
stuff. I remember that you could re-link the CP/M innards to allow HDD
support (I was never *that* rich).

Spent *many* hours on that box, running Wordstar, and a cool pascal compiler
called Turbo Pascal. I used a terminal that I brought from the US (ZRT-80).

I still have it, in a 19" box, with dual M4854 (5.25" 77 Track) drives.
(Boy, it was hard to find the HD media then). The box had the bigest
storage on the block, and I was the envy of all my friends when it came out.
A mate had an kaypro system that supported dual 170K? disks. (grin) From
memory, the board cost about $500 Aus, each drive cost about $450 Aus, and
the Apple II power supply for the case cost about $35US from Jameco. All in
1985 currency.

Anyway, back onto topic. I still have all of the listings, and the full
schematics for the box as well.

Doug Jackson
MSS Operations Manager
Citadel Securix
(02) 6290 9011 (Ph)
(02) 6262 6152 (Fax)
(0414) 986 878 (mobile)

> -----Original Message-----
> From: Ross Archer []
> Sent: Tuesday, August 27, 2002 10:08 AM
> To:
> Subject: BACK-OT: which CP/M machine is best (to copy)? :)
> Geoff Reed wrote:
> >
> > all of the CP/M machines I have here at the moment are
> serial terminal
> > based, I think that these are the rule, rather than the exception.
> Coolness. Maybe I'm asking all the wrong questions.
> The *right* question is: what terminal-based
> system would be good to use as a starting point/reference
> design? (i.e. "rip off and modify" :)
> That is: what's your favorite terminal-based
> CP/M system and why? :)
> Big points for:
> * Well-documented
> * Available BIOS ASM sourcecode
> * Available schematics
> * Particularly popular, collectable appeal (might as
> well
> emulate something people like.)
> * Unusually clever, minimalist, or just "good" designs.
> It would be so cool to get a fast Z180 adapted to fit
> as a superfast CP/M replica. :)

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