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ftoobig equ 80h
fbig equ 40h
romstatus equ 1
romread equ 2
romwrite equ 3
romverify equ 4
romformat equ 5
rsinit = 0a3h ;rs232 initialization
;9600 baud:no parity:1 stop:8 bit word
lf = 10 ;line feed
cr = 13 ;carriage return
backsp = 8 ;backspace
brkadr = 1bh * 4 ;006c 1bh break vector address
timadr = 1ch * 4 ;0070 1ch timer interrupt
dskadr = 1eh * 4 ;address of ptr to disk parameters
sec9 = 522h ;address of disk parameters
headsettle= sec9+9 ;address of head settle time
normsettle= 15 ;normal head settle
speedsettle= 0 ;speed up settle time
initspot= 534h ;ibm wants 4 zeros here
akport = 20h
eoi = 20h
cmdlen = 0 ;length of this command
unit = 1 ;sub unit specifier
cmd = 2 ;command code
status = 3 ;status
media = 13 ;media descriptor
trans = 14 ;transfer address
count = 18 ;count of blocks or characters
start = 20 ;first block to transfer
extra = 22 ;usually a pointer to vol id for error 15
start_l = 26 ; extended start sector (low)
start_h = 28 ; extended start sector (high)
chrout = 29h
maxerr = 5
lstdrv = 504h
bootbias = 200h
notbusystatus = 10000000b ; not busy
ackstatus = 01000000b ; acknowledge (for what?)
nopaperstatus = 00100000b ; no more paper
.selectedstatus = 00010000b ; the printer said it was selected
ioerrstatus = 00001000b ; some kinda error
reserved = 00000110b ; nops
timeoutstatus = 00000001b ; time out.
error_unknown_media = 7 ; for use in build bpb call
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