Jump to content
IGNORED

CoCo Disk BASIC v1.1 Disassembly


jdgabbard

Recommended Posts

Does any one have a copy of the Disk BASIC ROM listing, or even the Source, that includes comments? I've seen Disk BASIC Unraveled II as found here. But that is for the CoCo 3.

 

I'd like to pick apart the commented code to see if some of it could be re-purposed for a pet project I think I'm going to start up. Commented code would help, as I'm not too familiar with 6809 assembly (most of my experience is with the z80 and it's mnemonics). I've searched for hourse, and I've had a hard time coming up with what I'm looking for. I downloaded F9DASM and disassembled the disk Basic v1.1 code with an offset of 0xC800, but the code isn't even close to that in the Unraveled book.

Link to comment
Share on other sites

You might try checking contemporary Coco magazines. I recall that Hot Coco published a commented Extended Color Basic listing monthly through much of 1984, and some other magazines published at least sections of annotated ROMs.

 

I do not specifically recall annotated listings for Disk Basic, but as I did not have a disk drive (nor any knowledge of assembly language), it would have not been of any interest to me.

Link to comment
Share on other sites

Dave Phillipson ( programmer of an OS9 Level 2 program called Supercomm ) said:

 

"Tell him the unravelled book has got it. He’s also got the start address wrong. It is $C000 not $C800. I just checked "DISK BASIC UNRAVELLED II" and it’s right there on page B2. The DIsk ROM is the same regardless of which model of CoCo."

 

 

http://www.colorcomputerarchive.com/coco/Documents/Books/Unravelled%20Series/disk-basic-unravelled.pdf

 

 

MarkO

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...