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BIOSDSKE.INC
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1986-08-12
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1KB
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53 lines
; BIOSDSKE.INC - 5/3/86 - Hardware configuration constants.
; Used by BOOT, SBIOS, CBIOS, MAKESYS
; Target machine, set one of these to true.
xerox equ true
bigbrd equ false
hv1791 equ false ; Set true if 1791 controller
; Disk stuff:
mxdrv equ 4 ; # of disk drives supported.
five equ 1 ; Value for 40 trk 5"
bfive equ 2 ; Value for 80 trk 5"
eight equ 3 ; Value for 8"
dsize equ eight ; Set to five, bfive, or eight
if dsize eq five
spt equ 18 ; Sectors / track on 5"
tracks equ 40 ; Tracks on 5"
stept equ 3 ; Step time for 5"
msprev equ 210 ; ms per revolution
endif
if dsize eq bfive
spt equ 18 ; Sectors / track on 5"
tracks equ 80 ; Tracks on 5"
stept equ 3 ; Step time for 5"
msprev equ 210 ; ms per revolution
endif
if dsize eq eight
spt equ 26 ; Sectors / track on 8"
tracks equ 77 ; # tracks on 8"
if hv1791
stept equ 1 ; Step time for 8", 1791
else
stept equ 0 ; Step time for 8", 1771
endif
msprev equ 175 ; ms per revolution
endif
; Set xrxsds true if side select is done in the Xerox fashion,
; i.e. if C is the back of A and D is the back of B.
xrxsds equ true
whirtm equ 15 ; Seconds to let disk motor whir
secsiz equ 128 ; Size of a disk sector