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.


-----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)
>> > 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
>> that way. UARTS are much nicer (having later aquired a Super Serial
>> 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 *
>-- 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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