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Length: 1280 (0x500)
Types: TextFile
Names: »BN2HEX.MAC«
└─⟦01b5c9619⟧ Bits:30005906 Microsoft Multiplan v1.05 og HELP
└─ ⟦this⟧ »BN2HEX.MAC«
; ; ; ; ; Title Binary to hex ASCII ; Name: BN2HEX ; ; ; Purpose: Convert one byte of binary data to ; two ASCII characters ; ; Entry: Register A = Binary data ; ; Exit: Register H = ASCII more significant digit ; Register L = ASCII less significant digit ; ; Registers used: AF,B,HL ; ; Time: Approximately 162 cycles ; ; Size: Program 28 bytes ; ; ; BN2HEX: ;Convert high nibble ld b,a ;Save original binary value and 0f0h ;Get high nibble rrca ;Move high nibble to low nibble rrca rrca rrca call NASCII ;Convert high nibble to ASCII ld h,a ;Return high nibble in H ;Convert low nibble ld a,b and 0fh ;Get low nibble call NASCII ;Convert low nibble to ASCII ld l,a ;Return low nibble in L ret ;-------------------------------------------------- ; Subroutine ASCII ; Purpose: Convert a hexadecimal digit to ASCII ; Entry: A = Binary data in lower nibble ; Exit: ASCII characters ; Registers used: A,F ;-------------------------------------------------- NASCII: cp 10 jr c,NAS1 ;Jump if high nibble < 10 add a,7 ;Else add 7 so after adding '0' the ; character will be in 'A'..'F' NAS1: add a,'0' ;Add ASCII 0 to make a character ret «eof»