System information

; dsk set 0
; rept 3
; dsk set dsk+1
; diskdef%dsk,0
; endm
; endef
;
; the value of "begdat" at the end of assembly defines the
; beginning of the uninitialize ram area above the bios,
; while the value of "enddat" defines the next location
; following the end of the data area. the size of this
; area is given by the value of "datsiz" at the end of the
; assembly. note that the allocation vector will be quite
; large if a large disk size is defined with a small block
; size.
;
dskhdr macro dn
;; define a single disk header list
dpe&dn: dw xlt&dn,0000h ;translate table
dw 0000h,0000h ;scratch area
dw dirbuf,dpb&dn ;dir buff,parm block
dw csv&dn,alv&dn ;check, alloc vectors
endm
;
disks macro nd
;; define nd disks
ndisks set nd ;;for later reference
dpbase equ $ ;base of disk parameter blocks
;; generate the nd elements
dsknxt set 0
rept nd
dskhdr %dsknxt
dsknxt set dsknxt+1
endm
endm
;
dpbhdr macro dn
dpb&dn equ $ ;disk parm block
endm
;
ddb macro data,comment
;; define a db statement
db data comment
endm
;
Appendix F : CP/M Disk Definition Library CP/M Operating System Manual
F-2