Changes
added 48bit LBA routine (just for demonstration)
scf
ret
;### IDE48B -> set 48bit address
;### Eingabe IX[32-47],HL[16-31],DE[0-15]=Sectornumber, A=SDH, B=Number of Sectors
;### Output CF=0 -> ok
;### CF=1 -> A=error code (...)
;### Destroyed AF,BC,DE
ide48b push af ;4
call iderdy ; wait for ready before SDH write
jr c,ide48b1 ;2
pop af ;3
ld c,a ;1
push bc ;4
ld bc,ideprtsdh ;3
or #0f ;2
dec a ;1
out (c),a ;4 write SDH Register (low bytes)
call iderdy ; wait for ready after SDH write (maybe this can be skipped)
jr c,ide48b1 ;2
dec c ;1
out (c),l ;4 LBA 16-23
dec c ;1
out (c),d ;4 LBA 08-15
dec c ;1
out (c),e ;4 LBA 00-07
ld bc,ideprtsdh ;3
pop de ;3
inc e ;1
out (c),a ;4 write SDH Register (high bytes)
dec c ;1
db #dd:ld a,h ;2
out (c),a ;4 LBA 40-47
dec c ;1
db #dd:ld a,l ;2
out (c),a ;4 LBA 32-39
dec c ;1
out (c),h ;4 LBA 24-31
dec c ;1
out (c),d ;4 Sector count
ret ;3 -> 79 microseconds
ide48b1 pop bc ;Return on Error
ret
</pre>
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