1 Jun
2001
1 Jun
'01
4:30 p.m.
I have some RCA COSMAC 18xx family parts, two 1802 and one 1806 CPUs, an
1861 PIXIE video (!!), a 1854 UART, and a few assorted support chips. I've
decided that the best use for them would be to build an updated Elf (I also
built the original Elf 25 years ago and have always had a soft spot for the
1802).
What software is out there that can run on the COSMAC? Does anybody have
a copy of Tiny BASIC or figForth for the 1802?
I have the original Popular Electronics Elf articles, but I'd like to have
a look at the schematics for the Quest or Netronics Elf versions too. Does
anybody have copies that they can share?
BTW, I have schematics and ROM listings for the original RCA VIP (CDP18S711),
RCA COSMAC Evaluation Kit (CDP18S020, including UT4) and the COSMAC Microboard
(CDP18S604), if anybody needs those.
Thanks,
Bob Armstrong
2 Jun
2 Jun
3:23 a.m.
On Fri, 1 Jun 2001, Bob Armstrong wrote:
What software is out there that can run on the
COSMAC? Does anybody
have a copy of Tiny BASIC or figForth for the 1802?
Here's a site that might be helpful:
http://personal.lig.bellsouth.net/lig/d/o/dogas/cosmac/
There are also a couple more listed in the VCF Link Library that are
pertinent to the 1802:
http://www.vintage.org/cgi-bin/links.pl
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
7:56 a.m.
New subject: Software for an IMSAI 8080?
Hello,
I'm in the process of restoring an older Imsai 8080.
Can someone direct me to a ROM based BASIC to run on this
machine?
A ROM board with BASIC would be idea, but I suppose I could
build a ROM board if need be...
I have a batch of interesting S-100 boards (Solid State Music synthisizers,
a Compuprizim color video board, disk controllers, etc), so swaps are
possible!
3:27 a.m.
I've got an ELF-II.
Tiny basic was distibuted on cassette tape of poor quality, so it almost never
loaded correctly. As a result, I purchased the basic in ROM that uses the
MM57109 floating point chip.
I may have spare MM57109's, if you think about building an ELF-II under
the hood of an original ELF.
Bob Armstrong wrote:
I have some RCA COSMAC 18xx family parts, two 1802
and one 1806 CPUs, an
1861 PIXIE video (!!), a 1854 UART, and a few assorted support chips. I've
decided that the best use for them would be to build an updated Elf (I also
built the original Elf 25 years ago and have always had a soft spot for the
1802).
What software is out there that can run on the COSMAC? Does anybody have
a copy of Tiny BASIC or figForth for the 1802?
I have the original Popular Electronics Elf articles, but I'd like to have
a look at the schematics for the Quest or Netronics Elf versions too. Does
anybody have copies that they can share?
BTW, I have schematics and ROM listings for the original RCA VIP (CDP18S711),
RCA COSMAC Evaluation Kit (CDP18S020, including UT4) and the COSMAC Microboard
(CDP18S604), if anybody needs those.
Thanks,
Bob Armstrong
4 Jun
4 Jun
2:47 a.m.
--- Bob Armstrong <bob(a)jfcl.com> wrote:
I have the original Popular Electronics Elf
articles, but I'd like to have
a look at the schematics for the Quest or Netronics Elf versions too. Does
anybody have copies that they can share?
I have the Quest plans (and an Elf to go with them!). I can see about putting
them up. I wish I had a xerox of the PCB before I had put any parts on it.
My soldering skills at that age weren't very developed (nor were my tools of
sufficient quality - RatShack claims another teenage victim)
I had been working on a new 1802 design of my own, but it stalled when I was
unable to tranfer the schematics from OrCAD for DOS to some kind of layout
package. I have an original copy of PADS PCB, but I can't find the dongle.
I have OrCAD layout software, but I'm having problems with getting from the
schematic phase to the rats-nest phase in the layout software. I put it all
on the back burner over a year ago and haven't had the time to pick it back
up. Has anyone here used ExpressPCB? I saw an ad in Nuts and Volts, but
know nothing about it.
-ethan
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4 comments
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participants (4)
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bob＠jfcl.com -
bshannon＠tiac.net -
ethan_dicks＠yahoo.com -
foo＠siconic.com