Like everything I build it was a work in progress and was continually
evolving. The switch panel went when I got an old teletype. Was so
excited that I had a printer and real keyboard. The system code was then
about 1 k. The last work I did on that system involved designing in a
video terminal as my human interface with the main system of 64k of
dynamic ram using 1 x 16k chips and a Z80 processor. Thought the string
transfer op on the Z80 was fantastic. Even had a programmable character
generator so I could do graphics. I wrote my own version of CPM and
actually sold a few systems to friends. Back then 64k of ram, a 4 MHz
Z80 and a 5 MB hard drive was all that was needed to run everything a
small business needed, word processing (WordStar), spreadsheet (VisiCalc
I think) and a data base program for accounting. Then Bill Gates came
along and changed everything.
AG
On 11/13/2011 5:40 AM, Dr Joe Karthauser wrote:
On 12 Nov 2011, at 01:39, Aussie Guy E-Cat<[email protected]> wrote:
Nothing wrong with old programmers and old engineers. Cut by first code on a
8008 system that I designed and built. Had a whole 256 bytes of ram. Put the
program in with switches. Now that is old code.
Do you still have it? I'm sure that although I've still got the physical
artefacts of old programmes I wrote when I was a kid, the patterns are long
gone.
Joe
