[Coco] Disk subroutines for Assembly?

[Don Barber]

Robert, thank you so much for pointing me at the Unravelled series. I 
found them on the archive, and they are very helpful.

I'm using lwasm mainly because I'm used to my tooling on Linux. Vim, 
grep, hexdump, etc. Just what I'm used to.

Regarding my asking about Disk Basic disk access routines, it was simply 
an incorrect mental model/assumption that the rom that came with the 
disk controller cartridge would make some kind of provision to abstract 
away the filesystem for programmers. Much like how color basic gives ROM 
routines for CHROUT and POLCAT instead of forcing programmers to always 
write their own routines for updating video memory or querying the 
keyboard directly. My experience was also colored by the original 
Macintosh's including such subroutines in its ROM (see Inside Macintosh 
Volume 1 Chapter 6 at 
https://macintoshgarden.org/apps/inside-macintosh). It wouldn't have 
been that hard to do; Tandy did it for DSKCON after all, why not also 
FOPEN/FCLOSE ? Maybe it just came down to the error handling getting too 
complex.

Thanks,

Don

On 2/3/22 16:22, Robert Gault wrote:
> You will want to get the Unravelled series from the archive and study the SAVEM routines.
<snip>
> If you are planning to assemble code on your CoCo, why not use EDTASM? If you intend to continuing using lwasm, why are you asking about Disk Basic disk access routines?