Tandy 1000 Programmer's Reference Manual page 141

Chapter 1 I
System Calls
r e s e t - d i 5 t m a c r o d i s k
mov a h , EDH
i n t
21 H
endm
s e l e c t - d i 5 k m a c r o d i s k
mov d l , d l s k [ - 6 5 1
mov ah,EEH
i n t 21
H
endm
o p e n m a c r o f c b
mov d x , o f f s e t f c b
mow ah,EFH
i n t 21
H
endm
c l o s e m a c r o f c b
mov d x , o f f s e t f c b
mov a h , l l H
i n t 21
H
endm
s e a r c h - f i r s t m a c r o f c b
mov d x , o f f s e t f c b
mov a h , l l H
i n t 21
H
endm
s e a r c h - n e x t m a c r o f c b
mow d x , o f f s e t f c b
mov a h , l 2 H
i n t 21
H
endm
d e l e t e m a c r o f c b
mov
d x , o f f s e t f c b
mov a h , l 3 H
i n t 21 H
endm
r e a d - s e q m a c r o f c b
mov
d x , o f f s e t f c b
mov
a h , l 4 H
i n t 21 H
endm
w r i t e - s e q m a c r o f c b
m o v d x , o f f s e t f c b
mov a h , l 5 H
i n t 21 H
endm
;RESETDISK
; f u n c t i o n EDH
;SELECT-DISK
; f u n c t i o n E E H
;OPEN
; f u n c t i o n E F H
;CLOSE
; f u n c t i o n I E H
;SEARCH-FIRST
; F u n c t i o n 11H
;SEARCH-NEXT
: f u n c t i o n 12H
;DELETE
: f u n c t i o n 13H
;READ-SEQ
; f u n c t i o n 14H
;WRITE-SEQ
: f u n c t i o n 15H
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