Daniel Robbins hired by M$
James Knott
james.knott-bJEeYj9oJeDQT0dZR+AlfA at public.gmane.org
Wed Jun 15 13:52:49 UTC 2005
D. Hugh Redelmeier wrote:
> | From: Christopher Browne <cbbrowne-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>
>
> | There were, in general terms, three versions of Microsoft's BASICs,
> | back in those days... There was "Level 1", which was exceedingly
> | primitive. Level 2 was what a lot of people started programming with
> | whether on TRS-80s, Apples, or IBM PCs. Level 3 had some "holy grail"
> | stuff going on, but wasn't available in time to be interesting...
>
> Actually, for the Altair, it came in 4K and 8k versions, if my memory
> isn't failing me. 8k was normal, 4k was stripped to fit in more
> affordable configurations. Remember, the Altair base memory was 128
> bytes. Memory cost a lot. Generally static RAM, too!
>
> My Altair has 64K (but 16K is disabled to allow some address space for
> my EPROM).
My IMSAI didn't come with any memory. I had to buy a 16K board & 4KB of
memory, before I could do anything.
>
> I have a (legal, I think) copy of the 8k Micro Soft BASIC on paper
> tape. I've not owned a paper tape reader and an Altair
> simultaneously, so I've not tried the tape.
I had a BASIC tape that came from somewhere that I don't recall
(Processor Techology?). I used SCELBAL from Scelbi, for my BASIC
interpreter.
>
> I'm actually more impressed by the PDP-8 LISP that I have in paper
> tape. It fits runs in 4K 12-bit words, of which half are occupied by
> the interpreter and the rest are available for list space.
>
> I guess reading these tapes by eye might actually be practical. I've
> been too lazy so far. Besides, I don't think I'd do anything with
> them anyway.
I had to be able to read both 5 & 8 level tape, as part of my job, back
in the '70s. I think I've still got my paper tape gauge here somewhere
(it was used to make sure the hole spacing was correct). I eventually
bought a surplus M35 ASR from my employer, which I used with my IMSAI,
though I generally used cassettes, instead of paper tape.
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