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- ;****************************************************************
- ;* *
- ;* >>>>>>> S o f t D e s i g n <<<<<<< *
- ;* *
- ;* self relocating receiver routine *
- ;* for serial data transmission via cp/m reader channel *
- ;* allows binary file transfer from host computer *
- ;* by terminating file with five times eof *
- ;* message is stored in tpa for save command *
- ;* *
- ;****************************************************************
-
- ; usage:
-
- ; enter program code on receiving computer
- ; using ddtz inline assembler with "a100" command
- ; or in hex using ddtz "s100" command.
- ; exit from ddtz to cpmz80 system by "g0" command.
-
- ; save as file read.com
- ; with "save 1 read.com" cpmz80 command.
-
- ; adjust transmission line parameters (baud rate, stop bits, parity)
- ; on sending and receiving computer.
-
- ; start read.com on receiving machine.
-
- ; to send file x:yyyyyyyy.zzz execute on sending machine
- ; "pip pun:=x:yyyyyyyy.zzz[o],eof:,eof:,eof:,eof:,eof:".
-
- ; save file on receiving machine
- ; with "save n x:yyyyyyyy.zzz" command.
-
-
- ; 100 21 0E 01 11 80 00 01 1C 00 ED B0 C3 80 00 21 00 !........m0C..!.
- ; 110 01 1E 05 E5 D5 0E 03 CD 05 00 D1 E1 77 23 FE 1A ...eU..M..Qaw#~.
- ; 120 28 04 1E 05 18 ED 1D 20 EA C7 00 00 00 00 00 00 (....m. jG......
- ; 130 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
- ; 140 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
- ; 150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
- ; 160 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
- ; 170 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
-
-
-
- .Z80
- ASEG
- ORG 0100H
-
-
- BDOS EQU 0005H
- TPA EQU 0100H
- START EQU 0080H
-
- PROLEN EQU PROEND - PROGRM
-
- EOF EQU 1AH
-
-
-
- READ: LD HL,PROGRM
- LD DE,START
- LD BC,PROLEN
- RELOCT: LDIR ;relocate receiver program
- JP START
-
-
- PROGRM: LD HL,TPA ;receiver program
- LD E,5
-
- GETCHR: PUSH HL
- PUSH DE
- LD C,3
- CALL BDOS ;get reader character
- POP DE
- POP HL
-
- LD (HL),A
- INC HL
-
- ENDFL?: CP EOF
- JR Z,ISEOF
- LD E,5
- JR GETCHR
-
- ISEOF: DEC E
- JR NZ,GETCHR
-
-
- EXIT: RST 0
-
-
- PROEND: END
- ə