13 Feb
2015
13 Feb
'15
5:12 a.m.
On 02/08/2015 01:00 AM, jwsmobile wrote:
On 2/7/2015 3:51 AM, Armin Diehl wrote:
I have added some more pictures showing the cpu boards of both systems.
The switches are documented there as well.
http://www.ardiehl.de/basicfour/cpu/small/index.html
On 02/05/2015 10:19 PM, Ian McLaughlin wrote:
These are very nice
photos. Both of your systems appear to be on the
Microdata form factor, and if you were to look at the edge card
connector, it is probably a 130 pin (65 x 2) connector.74181 ALU
chips. I see a lot of what appears to be the scale logic that a 1600
type CPU or an advanced design could use on that the boards your
photographed.
Also the of the 4 switches are they all dual position, or are some
momentary? i believe that Basic 4 in this series of system kept the 4
sense switches of the 1600 in their hardware with similar functions
across all variations.
Long shot, but does anyone know of any available
disk/tape/paper
tape/ROM images for any of the Microdata machines (800/1600) or the
relatives (Intertechnique Multi-8/Multi-4, MAI Basic Four BB-II)?
There?s a bit of documentation available - Bitsavers has a bit, and
I have some MAI documentation that I?m in the process of scanning.
I?m toying with the idea of emulating this machine, but I?m having
difficulty locating any software for it.
Thanks in advance.
Ian
Not exactly that, however, i may have something for BB-IV but i think
these ones used cpu's developed by basic four. I have one 14"
harddisk from a model 210 as well as a disk pack for a basic four
510, both should be bootable. I have the machines/drives as well but
not yet tried to fire them up. The 210 came with a tape 1/4" drive
but i dont have any tapes.
I also thought about writing an emulator but i have not yet found the
manuals for the cpus used (1300 CPU Technical Manual / M1300 Series
CPU Organisation and Description Reference Manual). I have scanned
the available documentation and it is saved at Al's bitsaves site
(pdf/mai/).
The 210: http://www.ardiehl.de/basicfour/mai210/pics/small/index.html
The 510: http://www.ardiehl.de/basicfour/mai510/pics/small/ The QIC drives were emerging in the late 70's and
early 80's as a
storage media, but in the era of the original blue systems with
Microdata CPUs they were not around.
Very nice systems.
I don't know how much Century Trident info I have to offer, but I may
have documents if Bitsavers does not. I just got a stash of
documentation which comes from the direction of Pick Systems
documentation. They used the 80, 100 and I think 200mb Tridents for
their Evolution systems.
The document for the basic four 2460 contains the T80
service manual.
There are already other documents available on bitsavers.
(http://bitsavers.informatik.uni-stuttgart.de/pdf/centuryData/) Do you
have additional ones ?
Thanks
Jim
The Microdata 1600 cpu will have two
> Harddisk:
>
http://bitsavers.informatik.uni-stuttgart.de/pdf/mai/BFISD8052_Model_2460_F…
>
> Disk Drive:
>
http://bitsavers.informatik.uni-stuttgart.de/pdf/mai/BFISD8006_Model_2500_F…
>
>