[Coco] Is the 6309 worth it?

[tim lindner]

Phill Harvey-Smith <afra at aurigae.demon.co.uk> wrote:

> It's a real shame that Tandy did not do what Dragon did with their dos
> and have a jump table at the beginning of the ROM for things like 
> reading sectors,

There is a documented subroutine for reading/writing sectors.

> opening/closing files etc.

This is what was missing in documented ROM subroutines. Though Tandy did
distribute Kilgus DOS that suppilied this functionality for their Disk
EDTASM product. It ran on top of DECB so it had a large memory
footprint.

Did Tandy ever say it was OK to redistribute Kilgus DOS for programs
that used it?

> Since I hopefully have a couple of 6309s on order, is there a good 
> document on the extra modes/instructions anywhere ?

The best I found was the Burke & Burke 6309 book. Two years ago he will
still selling them. I'll dig up the email I used and forward it to you.

-- 
tim lindner
tlindner at macmess.org                                        Bright