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- ;; DOS variables
- defc DOSFD = 64768 ;; Current DOS file descriptor
- defc DRVSEL = 64769 ;; Selected drive no
- defc DOSBUF0 = 64786 ;; Pointer to DOSBUF 0
- defc DISKERR = 64789 ;; Drive error (if any)
- defc BCSAVE = 64797 ;; Register save area
- defc DOSDEFDEV = 64821 ;; DOS default device (" ") in RAM
- ;; DOS subroutines and pointers
- defc DCWAI = 24672 ;; Select drive
- defc DW0 = 24675 ;; Write sector to DOSBUF0
- defc DR0 = 24678 ;; Read sector from DOSBUF0
- defc DDEVDES = 24683 ;; Pointer to DOS device type list
- defc DRDWRET = 24689 ;; Pointer to driver hook
- defc DRDWEND = 25012 ;; Driver hook exit (when claimed)
- defc DRDWERR = 25011 ;; Driver hook exit on error
- defc DGETBUF = 25098 ;; Get address of DOSBUF B[7:4]
- defc DOSJPTABLE = 26195 ;; Address for disk drive jump table
- defc DOSALLOCBUF = 26100 ;; Allocate a DOSBUF
- defc DOSBUFINIT = 26155 ;; Initialize an IX map+DOS file descriptor
- defc DOSBUFREINIT = 26159 ;; Requires A = (ix+12), preserves BC
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