; BDOS TEST22 function23 file size get
;2012/3/4 3/7 4/16 4/17 4/27
;10/3
;
ORG $0100
FCALL=$0005
FCB=$005C
FCBR0=$007D
FCBR1=$007E
FCBR2=$007F
DMA=$0080
;
LD C,0F;open file
LD DE,FCB
CALL FCALL
INC A;if FFH?
JP Z,OPENERR
;
LD C,23;file size read
LD DE,FCB
CALL FCALL
;
LD A,(FCBR2)
CALL B2HEXDP
CALL SPDP
LD A,(FCBR1)
CALL B2HEXDP
CALL SPDP
LD A,(FCBR0)
CALL B2HEXDP
CALL CRLF
LD DE,OK
JP MSGOUT
;
OPENERR:LD DE,CANTOPN
MSGOUT:LD C,09
CALL FCALL
RET
;
;CL & LF
CRLF:LD A,0D
CALL ADP
LD A,0A
JP ADP
;space disp
SPDP:LD A,20
;A disp
ADP:PUSH BC
PUSH HL
LD E,A
LD C,02
CALL FCALL
POP HL
POP BC
RET
;binary to hex, 2bytes data to ascii 4charactors,HL to HL,DE
B2HEX4:LD A,H
CALL B2HEX2
EX DE,HL
LD A,E
;binary to hex, 1byte data to ascii 2charactors,A to DE
B2HEX2:PUSH AF
RRCA
RRCA
RRCA
RRCA
CALL B2HEX1
LD D,A
POP AF
CALL B2HEX1
LD E,A
RET
;binary to hex, low 4bit to ascii 1charactor
B2HEX1:AND 0F
ADD A,30
CP 3A
RET C;0-9
ADD A,07;A-F
RET
;hex to binary, ascii 1charactor to low 4bit
HTOB1:CP 30;>="0"?
RET C;no
CP 3A;<="9"?
JP C,HTOB1_2;yes,"0" to "9"
CP 41;>="A" ?
RET C;no
CP 47;<="F"?
JP C,HTOB1_1
CP 61;>="a"?
RET C;no
CP 67;<="f"?
CCF
RET C;no
HTOB1_1:ADD A,09;41 to 46 -> 4A to 4F,or 61 to 67 -> 6A to 6F
HTOB1_2:AND 0F
RET
;HL(bynary 2bytes) to asckii 4bytes & disp
HEX4DP:PUSH BC
PUSH HL
CALL B2HEX4;binary 2 bytes to ascii HEX 4bytes
PUSH DE
EX DE,HL
CALL DEDP
POP DE
CALL DEDP
POP HL
POP BC
RET
;A(binary) to asckii 2bytes HEX & disp
B2HEXDP:PUSH BC
PUSH HL
CALL B2HEX2
CALL DEDP
POP HL
POP BC
RET
;
;DE(asckii 2bytes) disp
DEDP:PUSH DE
LD E,D
LD C,02
CALL FCALL
POP DE
LD C,02
CALL FCALL
RET
;
CANTOPN:"can'"
"t op"
"en!"
DB 0D
DB 0A
DB 24;$
OK:"end"
DB 0D
DB 0A
DB 24;$
;
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