17 Jul
2004
17 Jul
'04
12:38 p.m.
Hello,
Having recently acquired some 6100's (I know they're
lesser than the 6120), I thought I'd try a PDP-8
project (I remember seeing these, but never got to
play with one.)
Ohio Scientific had a board--the 560Z--which contained
a 6100, a 6502, and a Z-80. The 6502 was
"microprogrammed" to emulate the PDP-8 IOT codes, and
OSI claimed that it was fully compatible. Has anyone
played with one of these suckers? How good was the
emulation? Does anyone have any info on the
schematics of that board, or the 6502 firmware? Or,
does anyone have an unused 560Z, working or not,
they'd be willing to part with?
I'm also aware of the SBC6120; I plan to order one of
these soon.
Thanks,
Dave
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17 Jul
17 Jul
3:56 p.m.
On Sat, 17 Jul 2004 17:38:34 -0700 (PDT)
Dave <dfnr2(a)yahoo.com> wrote:
Hello,
Having recently acquired some 6100's (I know they're
lesser than the 6120), I thought I'd try a PDP-8
project (I remember seeing these, but never got to
play with one.)
Ohio Scientific had a board--the 560Z--which contained
a 6100, a 6502, and a Z-80. The 6502 was
"microprogrammed" to emulate the PDP-8 IOT codes, and
OSI claimed that it was fully compatible. Has anyone
played with one of these suckers? How good was the
emulation? Does anyone have any info on the
schematics of that board, or the 6502 firmware? Or,
does anyone have an unused 560Z, working or not,
they'd be willing to part with?
I'm also aware of the SBC6120; I plan to order one of
these soon.
Thanks,
Dave
I have quantities of the 6100 processor chip (new in tubes) and have
been wanting to do a project with them as well. I have located all the
datasheets for the family and also the info for the Intercept and
Intercept, Jr. computers, which use the 6100. The serious constraints
of the 6100 processor are the small memory map. But with it's static
CMOS design it's a cool 'breadboard' computer because you can clock it
down to zero hertz.
What I've wanted to build with the 6100 is a switchpanel computer for
hand coded machine language. To relive the memories of when I
bootstrapped a PDP-8e to do my 'Introductory Computer Programming'
programming assignments at Hamline University in St. Paul, MN in 1978.
I was the only person who finished the FOCAL programming assignments
because I was the only person who learned how to bootstrap it to load
FOCAL off paper tape. Everybody else just turned in the FORTRAN
assignments.
Scott
19 Jul
19 Jul
2:15 p.m.
On Sat, 17 Jul 2004 22:56:23 -0500
Scott Stevens <sastevens(a)earthlink.net> wrote:
On Sat, 17 Jul 2004 17:38:34 -0700 (PDT)
Dave <dfnr2(a)yahoo.com> wrote:
Just a followup on this, because someone requested further info in
email. I have put up my IM6100 related datasheet collection on some
personal webspace. These are scanned datasheets in PDF format, and
include the datasheets for the whole 61xx line of chips. Please feel
encouraged to download and mirror this info where you like. Also in the
web folder is the usermanual (schematics, etc.) for the Intercept Jr.
which is a Single Board computer made with the 6100.
The url is: http://sasteven.multics.org/IM6100/
Please feel free to download and mirror these documents if you maintain
a web or ftp archive where this info would be of value. I cannot
permanently maintain these files on my personal webspace.
I continue to be interested in learning what anybody else has done with
the 6100 processor in a small breadboard-style design. I'm interested
enough to supply anybody interested in pursuing this project with me a
6100 chip (I have NOS tubes of them) at a nominal cost of a few dollars
plus shipping. I've been considering putting together some sort of a
starter kit with some of the parts.
Hello,
Having recently acquired some 6100's (I know they're
lesser than the 6120), I thought I'd try a PDP-8
project (I remember seeing these, but never got to
play with one.)
Thanks,
Dave
I have quantities of the 6100 processor chip (new in tubes) and have
been wanting to do a project with them as well. I have located all
the datasheets for the family and also the info for the Intercept and
Intercept, Jr. computers, which use the 6100. The serious constraints
of the 6100 processor are the small memory map. But with it's static
CMOS design it's a cool 'breadboard' computer because you can clock it
down to zero hertz.
8098
days inactive
8100
days old
2 comments
2 participants
participants (2)
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