8 Jul
2009
8 Jul
'09
8:26 a.m.
http://hackaday.com/2009/07/07/intel-8008-clock/
from the site "Every year [Len Bales] designs and
builds a new clock. His 2006 clock runs on the classic Intel 8008 microprocessor. The
design is definitely not for the faint of heart, but he includes all code, diagrams and a
good description on his site. The project is an interesting look into the not-so-distant
past of computing. While the function of the project is a clock, it is actually a fully
programmable 8008 computer running at 500khz with 16k of memory space and 4io ports. [Len]
also links a lot of useful 8008 resources for anyone wanting to tackle a project of their
own."
8 Jul
8 Jul
8:46 a.m.
On 7/8/09, Christian Liendo <christian_liendo at yahoo.com> wrote:
http://hackaday.com/2009/07/07/intel-8008-clock/
from the site "Every year [Len Bales] designs and builds a new clock. His 2006
clock runs on the classic Intel 8008 microprocessor. The design is definitely not for the
faint of heart...
Wow, that's a lot of breadboarding.
-ethan
9:15 a.m.
Ethan Dicks wrote:
I did roughly as much when I built up my 6502 board. If memory serves, I had a
GAL16V8AQ PLD (address decoder), 28C64 EEPROM, and a RAM chip on one chunk of
breadboard, a W65C02A (WDC CMOS 6502) on another, and a TI 16C550 UART on the
third.
I don't think I got the breadboarded version stable at much more than 2MHz,
but the Eurocard version runs quite nicely at 10MHz, with a full complement of
I/O cards (CPU/RAM/ROM, UART, SP0256A-AL2 speech synthesizer).
I've never plucked up the courage to put a scope on the backplane, though.
Phi-0 and Phi-2 are probably rather messy, and I suspect SEL0 thru SEL3 aren't
in much better shape...
Schematics (hand drawn with a Rapidograph, no less!) are at
http://www.philpem.me.uk/elec/6502/ if anyone wants to have a look.
Ultimately, I got to the point where I could make it run EhBASIC and speak,
then more or less ran out of things to do with it. At some point, I really
should tie a MOS 6581 "SID" sound chip to the bus and see what happens... Or
maybe a disk controller...
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/
from the site
"Every year [Len Bales] designs and builds a new clock. His
2006 clock runs on the classic Intel 8008 microprocessor. The design is
definitely not for the faint of heart...
Wow, that's a lot of breadboarding. 
3:10 a.m.
Philip Pemberton wrote:
Ethan Dicks wrote:
I did roughly as much when I built up my 6502 board. If memory serves,
I had a GAL16V8AQ PLD (address decoder), 28C64 EEPROM, and a RAM chip
on one chunk of breadboard, a W65C02A (WDC CMOS 6502) on another, and
a TI 16C550 UART on the third.
I don't think I got the breadboarded version stable at much more than
2MHz, but the Eurocard version runs quite nicely at 10MHz, with a full
complement of I/O cards (CPU/RAM/ROM, UART, SP0256A-AL2 speech
synthesizer).
I've never plucked up the courage to put a scope on the backplane,
though. Phi-0 and Phi-2 are probably rather messy, and I suspect SEL0
thru SEL3 aren't in much better shape...
Schematics (hand drawn with a Rapidograph, no less!) are at
http://www.philpem.me.uk/elec/6502/ if anyone wants to have a look.
Ultimately, I got to the point where I could make it run EhBASIC and
speak, then more or less ran out of things to do with it. At some
point, I really should tie a MOS 6581 "SID" sound chip to the bus and
see what happens... Or maybe a disk controller...
Well build it while you can get chips ... I was going to do CPLD
computer design, until I got a virus on my computer
and had to reinstall windows a few days ago. So I am back to TTL or
rather LS TTL since I can't get real TTL
from the
site "Every year [Len Bales] designs and builds a new
clock. His
2006 clock runs on the classic Intel 8008 microprocessor. The design is
definitely not for the faint of heart...
Wow, that's a lot of breadboarding. from my favorite supplier - Unicorn Electronics. I may
have to throw in
a few 74F283's or 7483's in to meet my
speed requirements on the increment/decrement data path. Here all I need
is a brain (optional) a pen and a pad of quad
paper and of course DATA sheets. Ben.
5646
days inactive
5646
days old
3 comments
4 participants
participants (4)
-
bfranchuk＠jetnet.ab.ca -
christian_liendo＠yahoo.com -
classiccmp＠philpem.me.uk -
ethan.dicks＠gmail.com