18 Dec
2001
18 Dec
'01
3:05 a.m.
From: Ben Franchuk <bfranchuk(a)jetnet.ab.ca>
Since I have no way of having a chip of 80's
technology made I have to
limit the design to what looks realistic for that era.
I dont get that? You want a 4mhz z80 or 5mhz 8085? Those are relatively
common. Now, if your doing PDP-8 era then 1.2uS instruction cycle was
the number, slow by todays standards.
This is what this is -- a hobby/ learning tool --
In the early 80s, I really was trying to do what zilog eventually did,
make a Z280 more or less. That and figure out what this ucode
thing was all about.
If it was $$$ making I would have to move to Seattle.
:)
Now that's depressing. ;)
18 Dec
18 Dec
7:44 a.m.
Allison wrote:
I have yet to see a nice micro-code example. All the micro-code
I have done ( on paper ) needed 32+ bits for a 2901 design.
Also about 2K of ROM. TTL controller. It got messy after you added
a MAR, In/out registers, and stuff like opcode decoding.
You tell me how I can make $$$ and I will not move to
seattle.
Deal? I could move to Antarctica and make linux boxes. Take a
penguin and stuff it in old 386. Stamp exported from 'Finland'.:)
--
Ben Franchuk --- Pre-historic Cpu's --
www.jetnet.ab.ca/users/bfranchuk/index.html
From: Ben Franchuk <bfranchuk(a)jetnet.ab.ca>
>Since I have no way of having a chip of 80's technology made I have to
>limit the design to what looks realistic for that era.
I dont get that? You want a 4mhz z80 or 5mhz 8085?
Those are relatively
common. Now, if your doing PDP-8 era then 1.2uS instruction cycle was
the number, slow by todays standards. Only 1000x slower. That is 10x for
ever 10
years.
What I wanted was a 12/24 bit CPU. Other than the 6100 cpu ( over
priced? )
by DEC nobody has ever put a octal machine 24:12 or 18:9 or 36:18:9 on a
chip.
(Ignoring PDP-10 stuff) to my knowledge.
BTW back then I had a Z80 kit, but problems with a home brew power
supply
kept it from running well.
This is what
this is -- a hobby/ learning tool --
In the early 80s, I really was trying to do what zilog eventually did,
make a Z280 more or less. That and figure out what this ucode
thing was all about. If it was $$$
making I would have to move to Seattle. :)
Now that's depressing. ;) 
25 Dec
25 Dec
8:29 a.m.
New subject: Penguin boxes (was: Re: MITS 2SIO serial chip?)
--- Ben Franchuk <bfranchuk(a)jetnet.ab.ca> wrote:
You tell me how I can make $$$ and I will not move to
seattle.
Deal? I could move to Antarctica and make linux boxes. Take a
penguin and stuff it in old 386. Stamp exported from 'Finland'.:)
But we didn't export Linux boxes, we imported them. Actually, "co-opted"
is probably a better term. I had to scrounge for a 486DX33 in 1995 to
load Slackware Linux on a box over the winter. Mostly, peons had Dell
316SX machines and managers had generic 486SX25 and 486DX33 w/4Mb, 16Mb
if you were "important". The only cool thing was that McMurdo has its
own Class B address and it was trivial to put my Amiga on the 'net (no
NAT!)
I only had a 486 because I pulled a board out of stock and set it up naked
on my workbench... we had power supplies, motherboards, network cards, etc,
but no spare cases. It also kept my boss from giving my computer away to
fix other people's problems in the short term. He had already given my
desktop away three times when I resorted to a boxless box. The look on his
face when he came around the corner to try it a fourth time was
priceless...
"...I need your PC for... Oh... nevermind..."
-ethan
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24 Dec
24 Dec
9:19 p.m.
New subject: Penguin boxes (was: Re: MITS 2SIO serial chip?)
Ethan Dicks wrote:
--- Ben Franchuk <bfranchuk(a)jetnet.ab.ca> wrote:
You could have always put in a rack and bolted it to your desk. :)
--
Ben Franchuk --- Pre-historic Cpu's --
www.jetnet.ab.ca/users/bfranchuk/index.html
You tell me how I can make $$$ and I will not
move to seattle.
Deal? I could move to Antarctica and make linux boxes. Take a
penguin and stuff it in old 386. Stamp exported from 'Finland'.:)
But we didn't export Linux boxes, we imported them. Actually, "co-opted"
is probably a better term. I had to scrounge for a 486DX33 in 1995 to
load Slackware Linux on a box over the winter. Mostly, peons had Dell
316SX machines and managers had generic 486SX25 and 486DX33 w/4Mb, 16Mb
if you were "important". The only cool thing was that McMurdo has its
own Class B address and it was trivial to put my Amiga on the 'net (no
NAT!)
I only had a 486 because I pulled a board out of stock and set it up naked
on my workbench... we had power supplies, motherboards, network cards, etc,
but no spare cases. It also kept my boss from giving my computer away to
fix other people's problems in the short term. He had already given my
desktop away three times when I resorted to a boxless box. The look on his
face when he came around the corner to try it a fourth time was
priceless...
"...I need your PC for... Oh... nevermind..."
-ethan
8317
days inactive
8324
days old
3 comments
3 participants
participants (3)
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ajp166＠bellatlantic.net -
bfranchuk＠jetnet.ab.ca -
erd_6502＠yahoo.com