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Cromemco System 3 with manuals

calvaradojr

New Member
Joined
Jan 18, 2009
Messages
3
Location
houston
Greetings, I have a Cromemco System 3 with manuals. I would like some help with getting a value on the unit to sell. It was given to me as a project but my interest now is just keeping Vista machines working. The unit consists of the following. The unit has not been powered up in years if it does power up, thanks for your help and pardon the interuption:

Main Unit with 4 cards: (1) 64KZ (1) TU-ART (1) Z-80-4 (1)64FDC

Appears to be (2) Tandon 8" Floppy Drives

Part of the chassis has been cut out to accommodate these drives. They are not the original drives, please view picture.

Terminal: Cromemco 3102:

The screen has a lining that has become detached from the glass screen.
Keyboard

System Disks: - not original and marked as follows plus one box of NEW 3M 8" disks (11 disks)

Master System Disk

RGUNN10D / copy of custom CDOS I/O Drivers for OCM

PRGM-001 Basic

DBMS + DBR / copy of Cromemco Data Base Management System + data Base Report language

32 K Basic / copy of Cromemco 32 Structured Basic

PRG DSK 3

PRG DSK 4

PRG DSK 5

Eichner Systems from Germany - 8" Floppy Container with 38 sleeves- very unique

Manuals: ALL CROMEMCO

CDOS OPERATING SYSTEM

DATABASE MANAGEMENT SYSTEM 1981

3102 TERMINAL 1979

32K STRUCTURED BASIC 1979

64FDC FLOPPY DISK CONTROLLER

TEXT EDITOR

64 K2 RANDOM ACCESS MEMORY

SYSTEM THREE

ZPU Z-80 CENTRAL PROCESSING UNIT

TU-ART DIGITAL INTERFACE

RDOS

DBR DATA BASE REPORTER
 

amouse

Experienced Member
Joined
Jan 31, 2007
Messages
253
Location
London
Hi from marcus,

It appears your have a post 1980 or so Cromemco Ssytem III.

The Tandon 8" drives were a change from the original Persci drives. Persci was expensive and prone to failure. My recollection is that later System III's had a slightly different front panel to accomodate the Tandons.

In a moment of gross stupidity I threw my System III away so can't check it.

I think the value of such a working system including the software is a few hundred dollars, 500 USD at max. Does everybody else agree?

One of the biggest negatives about buying Cromemco equipment is that it is so big and heavy! This would practically rule out a foreign sale since shipping would be too expensive.

If you dont have the time or skills to do the necessary testing then I think it would be worth less since the buyer might just need to use it for parts ... and this is a Z80 8bit based system not the later 68000 based one.

If you have done all the necessary taking apart, dusting, cleaning and reassembling feel free to contact fellow forum members for advice on howto start and check the system. If you need a working OS disk or two then I can send you one (but I'm in Switzerland so it would take a while)
 

amouse

Experienced Member
Joined
Jan 31, 2007
Messages
253
Location
London
Also, you mention a diskette with RGUNN10D on it.

This just might be the (Robert) Gunn Enterprises CP-M simulator. here is the text of a 1985 advert for it:

The SIMULATOR with the right
combination unlocks the power of Cromix
for your CDOS and CP/M programs
Our CDOS-CP/M Simulator is designed to
replace Cromemco's simulator in all Z-80 and
68000 Cromix configurations and incorporates
powerful features that make your system
work more efficiently and effectively.
All CP/M 2.2 Systems Calls are processed
and all MP/M system calls are ignored without
creating fatal errors.
Dynamic Printer Contro/- Allows up to 4
printers to operate under program control of
the CP/M I/O byte. Printer output can be
directed to any device or file you choose. If
the selected printer is busy, output will
automatically be made to a file that can be
printed later. The Ap function of CP/M and
'Write functions of COOS are also supported.
Location of Directories (B:-Z:) - can be
specified in another environment file (.profile)
using full 128 byte Cromix path names. A
default directory (/Iib/ovr) is always searched
after the specified directory if a file is not
found.
Environment Files - can be created that
specify the running environment for specific
programs. These files include up to 34128
byte function keys, printer spooling On/Off,
printer selection, upper case lock, circular
buffer line count, and CP/M or COOS emulation
flag.
Programmable Function Keys for All Com·
mon Terminals - including those without
function keys. Once function keys have been
programmed, they can be saved to an environment
file that is automatically loaded the next
time the program is executed.
Printer Spooling - Spooling to the printer
device can be enabled with the keyboard or
an environment file.
EOF Characters (Z) - are eliminated from
the end of user disk files.
Input Line Editing - As you enter a line of
data, the simulator allows interactive editing
(exchange, deletion, or insertion) and/or recall
of up to 255 lines from the circular line buffer.
Command Function Menu - allows the
user to branch to our command menu and
selectively change the environment features.
In addition the Fork to a Shell makes it convenient
to leave a program, work on other files
and reenter the program where you left it.
Used properly these enhancements will
give you greater control and flexibility with
your system.
Call for more information - Oealer
Inquiries Invited.

Gunn Enterprises, Inc.
5615 Richmond, Suite 150
Houston, Texas 77057
 

Erik

Site Administrator
Staff member
Joined
Apr 27, 2003
Messages
3,592
Location
San Jose, CA
I think the value of such a working system including the software is a few hundred dollars, 500 USD at max. Does everybody else agree?

That sounds about right to me. Assuming it's working and clean a few hundred sounds fair.

In excellent condition with everything (docs, software, etc.) it might go above $500 to the dedicated collector.

Considering this one has cosmetic alterations and some damage (the terminal) the value is probably in the mid-range.
 

billdeg

Technician
Joined
Nov 18, 2003
Messages
3,872
Location
Landenberg, PA USA
It's possible that the person swapped out the original drives. It'd be easy enough to do. Do you have a 4FDC disk controller or the 16?

Bill
 

MikeS

Veteran Member
Joined
Dec 23, 2005
Messages
7,492
Location
Toronto ON Canada
If you haven't grasped the subtle irony of the folks here, they're asking where those pictures are that you mentined.

I'd agree with Bill, that someone probably replaced flaky Perscis with Tandons, but let's see those pictures; most of the units with Tandons were hard disk models.

I've got a System 3 and a couple of the later 300s, all using Tandon TM848s.

m
 

calvaradojr2

New Member
Joined
Jun 24, 2010
Messages
1
Gentlemen sorry I did not deliver pictures. BTW iI just listed the books on ebay.

Gentlemen sorry I did not deliver pictures. BTW iI just listed the books on ebay.

and all i have is a crummy cell camera.cromemco.jpg
 
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