PAGE STTL "--- MACHINE COLDSTART: CBM64 ---" ORG $1200 ; --------- ; COLDSTART ; --------- ; BANK CONFIGURING IS LIKE THIS: ; BIT 0 $D000 - $DFFF 1 = RAM 0 = IO ; BIT 1 $4000 - $7FFF 1 = RAM 0 = SYSTEM ROM ; BIT 2 & 3 $8000 - $BFFF 11 = RAM 00 = SYSTEM ROM ; BITS 4 & 5 $C000 - $FFFF 11 = RAM 00 = SYSTEM ROM ; BIT 6 RAM BANK 0 = BANK0 1 = BANK1 ; BIT 7 UNUSED, WILL BE FOR BANKS 2 & 3 COLD1: LDA #%00001110 ; SET UP CONFIGURATIONS FOR STA BANK0 ; PROPER USE OF MEMORY LDA #%01111111 ; SAVING TO BE USED AS NEEDED STA BANK1 LDA #%00111110 STA BANK2 ; RAM FROM $C000 - $FFFF IN BANK0 LDA #$0E JSR CHROUT ; USE UPPER/LOWER CHARS LDA #$80 ; PROHIBIT FURTHER STA MODE ; CHARSET CHANGES JSR CLALL ; CLOSE EVERYTHING JSR MEMCHK ; check for ram expansion JMP WARM1 ; --------------- ; WARMSTART ENTRY ; --------------- SLOAD: DB "The story is loading ..." DB EOL SLOADL EQU $-SLOAD WARM1: CLD LDX #$FF TXS ; RESET MACHINE STACK LDA #CLS ; CLEAR SCREEN, ETC. JSR CHROUT LDA #1 ; SET FONT TO 1 SO STA FONT ; CHARS WILL BE DISPLAYED LDY #28 ; POSITION "STORY LOADING" MESSAGE LDX #11 ; AT (8,11) CLC JSR PLOT LDX #SLOAD LDY #SLOADL JSR DLINE ; "THE STORY IS LOADING ..." LDA #8 ; MAKE BOOT DRIVE JSR DOPEN ; AND OPEN IT JMP WARM2 ; JMP OVER TEXT STRINGS END