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0040h:0041h Last Diskette Drive Operation Status
BYTE
00h No error
01h Invalid command
02h Address mark not found
03h Attempt to write on write-protected disk
04h Sector not found
06h Diskette change line active
08h DMA overrun
09h Attempt to DMA across a 64K boundary
0Ch Media type unknown
10h CRC data error
20h Controller failure
40h Seek failure
80h Drive not ready |
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