Re: 1551 Test Demo

From: Richard Atkinson (
Date: 2000-05-23 17:42:23

On Tue, 23 May 2000, Bo Zimmerman wrote:

> I downloaded this off FUNET to take a look at it, and examining the
> directory, a question almost immediately entered my mind:
> What are the C64/VIC-20 wedges on there for?  Heck, why is there ANY
> C64/VIC-20 software on there?

This is interesting. Try disassembling the routines - perhaps they make
accesses to hardware in the C64's I/O space. Commodore originally planned
to make a fast disk drive system for the C64 before the 264 series came
along and got it instead. The early C64 Programmers Reference Guides show
$DExx reserved for the CP/M cartridge and $DFxx reserved for a fast
(parallel) disk drive interface.

Is there anything at all different from the 1541 versions of these files?


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