MEMORY PLUS Manual By Lee Davison and Hans Otten Back to The Computerist
MEMORY PLUS Manual By Lee Davison and Hans Otten Back to The Computerist
0036 A9 00 ENTER LDAIM $00 CLEAR ALL STATUS FLACS 0038 48 PHA 0039 28 PLP 003A A0 00 LDYIM $00 ENTRY IF TABLE PRESET 003C A9 C5 LDAIM INTRPT GET INTERRUPT POINTER 003E 91 0B STAIY INTVEC SETUP IN TABLE 0040 A9 00 LDAIM INTRPT / 0042 C8 INY BUMP POINTER 0043 91 0B STAIY INTVEC 0045 A9 EC LDAIM $EC SETUP VIA VALUES 0047 A0 0C LDYIM PCR 0049 91 06 STAIY VIA 004B A0 0E LDYIM IER DISABLE ALL INTERRUPTS 004D A9 7F LDAIM $7F 004F 91 06 STAIY VIA 0051 A0 0D LDYIM IFR 0053 A9 FF LDAIM $FF CLEAR INTERRUPT PENDINC 0055 91 06 STAIY VIA 0057 A0 0E LDYIM IER 0059 A9 A0 LDAIM $A0 ENABLE TIMER TWC 005B 91 06 STAIY VIA 005D A2 00 NEXT LDXIM $00 INIT X REGISTER 005F A9 FF LDAIM $FF SET DATA DIRECTICN 0061 A0 02 LDYIM DDRB 0063 91 06 STAIY VIA 0065 A0 03 LDYIM DDRA 0067 91 06 STAIY VIA 0069 81 0D STAIX PBDD 006B A5 02 LDA PRML0W OUTPUT NEXT ADDRESS 006D 81 06 STAIX VIA LOW 8 BITS 006F A5 03 LDA PRMHGH 0071 81 0F STAIX PBD BITS 8, 9, 10 0073 A1 00 LDAIX SAL SET DATA BYTE 0075 A0 01 LDYIM 0RA 0077 91 06 STATY VIA CUTPUT VIA 0RA 0079 A9 50 TIMER LDAIM $50 SETUP 50 MILLISEC0ND TIMER 007B A0 08 LDYIM TTW0L 007D 91 06 STAIY VIA OUTPUT TO TIMER TWO LOW 007F A9 C3 LDAIM $C3 HIGH BYTE OF TIMER 0081 A0 09 LDYIM TTW0H 0083 91 06 STATY VIA OUTPUT TO TIMER TWO HIGH 0085 A9 CE LDAIM $CE PR0GRAM HIGH, PROGRAM MODE 0087 AC 0C LDYIM PCR 0089 91 06 STAIY VIA 008B C0 0C WAIT CPYIM PCR TEST FOR INTERRUPT SERVICED 008D F0 FC BEQ WAIT ELSE, WAIT FOR IT 008F A9 00 VERIFY LDAIM $00 VERIFY PR0GRAMMING 0091 A0 03 LDYIM DDRA SET ORA FOR INPUT 0093 91 06 STATY VIA 0095 A0 01 LDYIM ORA SETUP POINTER 0097 B1 06 LDAIY VIA