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- COMMODORE/KAYPRO COMPATIBILITY
- by Toby Prim, Las Vegas KUG, July 1987
-
- (CP/M compatibility between Kaypro and Commodore.)
-
- Here is some information I've collected about how the Commodore-
- 128 using CP/M can use Kaypro formatted disks. I hope it helps
- members and prospective members who started with a Commodore-128
- and now have Kaypros, etc.
-
- The Commodore-128 will default to the 128-mode when powered up.
- The Commodore CP/M disk must be loaded. On a color monitor, the
- CP/M text is displayed in purple. The Commodore-157 "smart" disk
- will handle only double density (MFM) formats.
-
- When a CP/M disk is inserted in the drive and accessed, the drive
- will determine its format and display it in a box in the lower
- left hand corner of the screen. The drive can sense only six (6)
- formats. RETURN must be typed to enter this format and the disk
- accessed again to read or write.
-
- If the format is known, the display in the box can be scrolled by
- using the left and right arrow keys before being selected by the
- RETURN key. The disk drive will go through this selection
- process every time the disk is accessed unless the format is
- locked in by typing CONTROL/RETURN instead of RETURN.
-
- The formats recognized by the Disk Drive are:
-
- EPSON QX10 (double sided, 10 sectors per track)
- IBM-8 (CP/M-86) (both single and double sided, 8 sectors per
- track)
- KAYPRO II/IV (both single and double sided, 10 sectors per track)
- OSBORNE DD (single sided, 5 sectors per track)
-
- The Commodore appears to run generic CP/M but has problems when
- the program gets I/O specific, such as "output to 40H" instead of
- "output to printer".