register-impoverished childhoods was Re: Z80 TRAP and CP/M
cclist at sydex.com
Wed Apr 5 12:36:02 CDT 2006
On 4/5/2006 at 10:57 AM Kevin Handy wrote:
>> The first computer I got to use was a PDP-8. You get a Program Counter
>> and a Accumulator. :)
>And NO stack. Might as well mention the intresting missing items too.
My first "Hands on" was an IBM 1620. No accumulator or stack. Decimal
arithmetic--and you had to load the addition and mulitplication tables
yourself. Variable word and record length, so you could easily clear
memory several ways using a single instruction...sometimes when you
actually intended to do it.
Lotsa blinkenlights, though!
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