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The CPMBased Computer
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aaaa ASCII assembly language programs BDOS call binary buffer byte CALL CCRLF CALL SPMSG carriage return CBIOS CD0500 CALL BDOS CIMSG command line COMSG console contents copy CP/M based computer CP/M operating system CP/M system CPMIO CTRL debugging disk access disk drive display drive selection eight-bit execute fetch file control block file name file type FILENAME.TYP floppy disk function hardware hexadecimal I/O devices index register input instruction Intel IOBYT jump line printer loaded loader logical device machine language main program memory address memory location microcomputer microprocessor monitor opcode output paper tape physical devices PROM PUSH reader record reset routines SAVE source program STAT subroutines terminal test program TFCB transient program TWOCR user programs vectors WBOOT WCONF write