Nostalgia
L. Adrian Griffis
adrian at nerds.org
Tue Mar 11 03:49:17 CST 2003
On Mon, 10 Mar 2003, zscoundrel wrote:
> I can beat that.
>
> My first computer job didn't even have a crt tube connected to the
> system!!! It was an IBM s/360 model 30 with a whopping 24k memory
> expansion module the size of an large side-by-side fridge! The system
> console/log was an IBM selectric with a pin feed roller platen.
Ha!! You had it easy. On my first programming job, I worked on
a single board system called a Sym-1. It was 6502 based, with 4K
of static RAM, and was programmed through either a flexable membrane
key pad, or through a software driven serial port, if you had a
terminal. I had to hand assemble my own code and enter it into
the system in hexadecimal. Also, I designed and built I/O
expantion hardware using breadboards to test the ideas, and then
with a soldering iron and these cheap Radio Shack prototyping
boards. Does anyone else out there remember how handy a 74145 is
for address decoding?
Adrian
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