19 Mar
2010
19 Mar
'10
7:10 p.m.
I have put online some pictures and schematics of a rather pathetic homebuilt TTL machine
I constructed around 1985
Specs 12 bit wide, 8K ram, 256 word hardware stack.
CPU 3 x 74181
Hardcoded instruction set.
No blinkenlights, but, almost as good, 4 nixies as display.
Since I just cannot be bothered to make a proper homepage, I have just put everyting on my
FTP server.
Find the goodies here :
ftp://jdreesen.dyndns.org/ftp/T3
Jos Dreesen
19 Mar
19 Mar
10:04 p.m.
On Sat, 20 Mar 2010 05:40:34 am Jos Dreesen wrote:
I have put online some pictures and schematics of a
rather pathetic
homebuilt TTL machine I constructed around 1985
Pathetic? Not at all! It looks great. Does T-3 mean anything?
I'm making my own CPU of sorts too. It's based on the MC14500 1-bit control
unit. So far the core of it can be crammed into nine 7400 series IC's.
Cheers,
Alexis.
20 Mar
20 Mar
8:43 a.m.
New subject: Just another homebuilt TTL machine
On Fri, Mar 19, 2010 at 8:10 PM, Jos Dreesen <jdr_use at bluewin.ch> wrote:
I have put online some pictures and schematics of a rather pathetic
homebuilt TTL machine I constructed around 1985
Specs 12 bit wide, 8K ram, 256 word hardware stack.
CPU 3 x 74181
Hardcoded instruction set.
No blinkenlights, but, almost as good, 4 nixies as display.
I really like the nixie display. A cool machine.
--
Regards,
Torfinn Ingolfsen
5407
days inactive
5408
days old
2 comments
3 participants
participants (3)
-
jdr_use＠bluewin.ch -
thrashbarg＠kaput.homeunix.org -
tingox＠gmail.com