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How to Read Commodore 8050 Disks on an 8250?

 

Program reproduced with permission from a Bill Levak post on and CBM Hackers newsgroup January 9, 2002

 

To read 8050 disks on the 8250 you need to use a program on the drive to trick it into thinking like an 8050 (save it before you run it!):

10 REM     8050 8250
11 REM 172   1    2  SIDES
12 REM 192  38   38  BAM AND DIRECTORY
13 REM 193  38   38   TRACK NUMBERS
14 REM 194  39   38
15 REM 195   0   38
16 REM 196   0   39
17 REM 197   0    0  BAM AND DIRECTORY
18 REM 198   3    3   SECTOR NUMBERS
19 REM 199   1    6
20 REM 200   0    9
21 REM 201   0    1
22 REM 233  78  155  TOTAL TRACKS + 1
23 REM 237   0   77  TRACKS ON SIDE 2
24 INPUT"DEVICE ADDRESS";DA:OPEN1,DA,15
25 PRINT#1,"M-W"CHR$(172)CHR$(16)CHR$(1)CHR$(1)
26 PRINT#1,"M-W"CHR$(194)CHR$(16)CHR$(3)CHR$(39)CHR$(0)CHR$(0)
27 PRINT#1,"M-W"CHR$(199)CHR$(16)CHR$(3)CHR$(1)CHR$(0)CHR$(0)
28 PRINT#1,"M-W"CHR$(233)CHR$(16)CHR$(1)CHR$(78)
29 PRINT#1,"M-W"CHR$(237)CHR$(16)CHR$(1)CHR$(0):PRINT#1,"U9":CLOSE1


The best PETto PC transfer process from my recent research looks to be Marko Makela's CN232, which is quite affordable, more details can be found hereNote that he has a few finished CN-232s left (as of April 2003), so if interested contact him soon.

 
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