Disassembly of Multiface 2 memory dump loader

NOTE:

• It is assumed that the Multiface is "visible" when this file is run. If the Multiface is "invisible" the memory dump will fail to load.

Load address: &AF80
Length:  &0138
Execution: &AF80

** START OF FILE **

AF80            DI             ;disable interrupts. 
AF81            EXX
AF82            LD BC,&7F89    ;Gate Array: Mode 1, upper rom off, lower rom on
AF85            OUT (C),C
AF87            EXX
AF88            LD BC,&FEE8    ;activate Multiface rom/ram
AF8B            OUT (C),C

                               ;now, Multiface ROM goes from &0000-&2000
                               ;     Multiface RAM goes from &2000-&3fff

AF8D            LD HL,&AFA4    ;copy data needed to restore program into
AF90            LD DE,&3A0F    ;Multiface RAM
AF93            LD BC,&00FA
AF96            LDIR
                                    ;HL = &B09E

AF98            LD DE,&3EE6    ;poke register values into Multiface RAM
AF9B            LD BC,&001A
AF9E            LDIR

AFA0            JP &002B       ;call memory dump restore function in Multiface ROM

AFA3            defs 1         ;** not used **

AFA4-B09D           DATA TO RESTART HARDWARE TO BE CONFIRMED

;; Z80 REGISTER VALUES

B09E            defs 1          ;;low byte of IY register
B09F            defs 1          ;;high byte of IY register
B0A0            defs 1          ;;low byte of IX register
B0A1            defs 1          ;;high byte of IX register
B0A2            defs 1          ;;C' register
B0A3            defs 1          ;;B' register
B0A4            defs 1          ;;E' register
B0A5            defs 1          ;;D' register
B0A6            defs 1          ;;L' register
B0A7            defs 1          ;;H' register
B0A8            defs 1          ;;F' register
B0A9            defs 1          ;;A' register
B0AA            defs 1          ;;C register
B0AB            defs 1          ;;B register 
B0AC            defs 1          ;;E register 
B0AD            defs 1          ;;D register
B0AE            defs 1          ;;Flags register after a LD A,R instruction
B0AF            defs 1          ;;R register
B0B0            defs 1          ;;Flags register after a LD A,I instruction
B0B1            defs 1          ;;I register
B0B2            defs 1          ;;L register
B0B3            defs 1          ;;H register
B0B4            defs 1          ;;F register
B0B5            defs 1          ;;A register
B0B6            defs 1          ;;Low byte of SP register
B0B7            defs 1          ;;High byte of SP register

                                ;;The PC of the frozen program is stored on the stack of the frozen program.


** END OF FILE **