Original Apple II (not + or e or other)

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Thu Aug 24 17:46:29 2000

bit banging was most common to the 6502 world, most of the other
systems used real UART/USARTs. I think it was the idea of software
was cheaper than hardware. Most of the bit bashers seems to live on the
low end of the performance spectrum for their time.

Allison

-----Original Message-----
From: Cameron Kaiser <spectre_at_stockholm.ptloma.edu>
To: classiccmp_at_classiccmp.org <classiccmp_at_classiccmp.org>
Date: Thursday, August 24, 2000 1:04 PM
Subject: Re: Original Apple II (not + or e or other)


>> > Believe me, after you've tried to use this card seriously you (a)
wish
>> > for a real serial card with a 6850 or 6551 on it and (b) want to do
>> > unprintable things to the designers...
>>
>> The C-64 comes with 1200-baud bit-banging in ROM. That's why we did
it
>> that way. UARTS are much nicer (having later aquired a Super Serial
Card),
>> but not all micros had them.
>
>I always found that one of the dumbest ideas Commodore came up with
>(emulating the 6551 in software). It's not like it couldn't have been
>built into the computer; the Plus/4 has a real live 6551 driving its
>user port and it does fabulously well.
>
>--
>----------------------------- personal page:
http://www.armory.com/~spectre/ --
> Cameron Kaiser, Point Loma Nazarene University *
ckaiser_at_stockholm.ptloma.edu
>-- Those are my principles. If you don't like them, I have others. -- G.
Marx -
Received on Thu Aug 24 2000 - 17:46:29 BST

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