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O! O!0:IIWWG|e}e ڐdԒ ͒ڝÔxWN #~Iæ!wͤ*=!9{_z{ G>#I*=>=^#V#q******************* * * * COLD-BOOT SIGN-ON MESSAGE * * * ************************************************************* PROMPT: IF LDRBIOS DB ACR,ALF,ALF DB 'LOADER FOR MORROW DESIGNS DJ2D CONTROLLER.' DB ACR,ALF,0 ENDIF ; IF NOT LDRBIOS DB ACR,ALF,ALF DB 'CP/M 3.0 (V' ;CP/M VERSION NUMBER DB CPMREV/10+'0' DB '.' DB (CPMREV MOD 10)+'0' DB '), BIOS REV ' DB REVNUM/10+'0','.' ;REVISION * * * ************************************************************* IF LDRBIOS ;PERFORM ANY INITIALIZATIONS TINIT: MVI C,CLEAR ; THAT YOUR SYSTEM REQUIRES CALL COUT ;CLEAR THE CONSOLE SCREEN RET ENDIF ************************************************************* * * * COLD BOOT ROUTINES * * * *****************************************************D DISK BUFF EQU 80H ;DEFAULT BUFFER ADDRESS TPA EQU 100H ;TRANSIENT MEMORY ENTRY EQU 5 ;BDOS ENTRY JUMP ADDRESS RETRIES EQU 10 ;MAX RETRIES ON DISK I/O BEFORE ERROR ACR EQU 0DH ;CARRIAGE RETURN ALF EQU 0AH ;A LINE FEED MAXDISK EQU 4 ;MAX OF DISK DRIVES CLEAR EQU 1AH ;CLEAR SCREEN CODE FOR LDRBIOS ************************************************************* * * * PUBLIC AND EXTERNAL DECLARATIONS REQUIRED FOR CP/M PLUS. * * EAD SECTOR ?WRITE: JMP WRITE ;WRITE SECTOR ?LISTS: JMP LISTST ;RETURN LIST STATUS A=FF=READY ?SCTRN: JMP SECTRAN ;SECTOR TRANSLATE SECTOR IN BC ?CONOS: JMP CONOST ; OUTPUT STATUS OF CONSOLE ?AUXIS: JMP AUXIST ; INPUT STATUS OF AUX. PORT ?AUXOS: JMP AUXOST ; OUTPUT STATUS OF AUX. PORT ?DVTAB: JMP DEVTBL ; ADDRESS OF CHAR. I/O TABLE ?DEVIN: JMP DEVINI ;INITIALIZE CHAR. I/O DEVICES ?DRTBL: JMP DRVTBL ; ADDRESS OF DISK DRIVE TABLE ?MLTIO: JMP MULTIO ;SET NUMBER OF LOGICALLY CONSECUITIVE is finish address X{f}{r} (Examine) Examine/alter CPU state. f is flag bit C,Z,M,E or I. r is register A,B,D,H,S or P. ///2Examples A>SID CP/M 3 loads SID from drive A into memory. SID displays the # prompt when it is ready to accept commands. A>B:SID SAMPLE.HEX CP/M 3 loads SID and the program file SAMPLE.HEX into memory from drive B. ///2Utilities SID uer on the disk Number of free directory entries for the disk Drive characteristics ///2Examples A>SHOW A>SHOW [SPACE] Instructs the system to display access mode and amount of space left on logged-in drives. A>SHOW B: Show access mode for drive B and amount of space left on drive B. A>SHOW B:[LABEL] Displays label information for drive B. A>SHOW [USERS] Displays the current user number and all the u (Load) Load program and symbol table {,sym-filespec} for execution E*sym-filespec (Load) Load a symbol table file Fs,f,d (Fill) Fill memory with constant value s is the start address f is the finish address d is an eight-bit data item G{p}{,a{,b}} (Go) Begin Execution p is a st