package apple2 import ( "io" ) type card interface { loadRom(data []uint8) assign(a *Apple2, slot int) persistent } type cardBase struct { a *Apple2 rom *memoryRange romExtra *memoryRange slot int _ssr [16]softSwitchR _ssw [16]softSwitchW _ssrName [16]string _sswName [16]string } func (c *cardBase) loadRom(data []uint8) { if c.a != nil { panic("Assert failed. Rom must be loaded before inserting the card in the slot") } if len(data) >= 0x100 { c.rom = newMemoryRange(0, data) } if len(data) >= 0x800 { c.romExtra = newMemoryRange(0, data) } } func (c *cardBase) assign(a *Apple2, slot int) { c.a = a c.slot = slot if slot != 0 && c.rom != nil { c.rom.base = uint16(0xc000 + slot*0x100) a.mmu.setPagesRead(uint8(0xc0+slot), uint8(0xc0+slot), c.rom) } if slot != 0 && c.romExtra != nil { c.romExtra.base = uint16(0xc800) a.mmu.prepareCardExtraRom(slot, c.romExtra) } for i := 0; i < 0x10; i++ { a.io.addSoftSwitchR(uint8(0xC80+slot*0x10+i), c._ssr[i], c._ssrName[i]) a.io.addSoftSwitchW(uint8(0xC80+slot*0x10+i), c._ssw[i], c._sswName[i]) } } func (c *cardBase) addCardSoftSwitchR(address uint8, ss softSwitchR, name string) { c._ssr[address] = ss c._ssrName[address] = name } func (c *cardBase) addCardSoftSwitchW(address uint8, ss softSwitchW, name string) { c._ssw[address] = ss c._sswName[address] = name } func (c *cardBase) save(w io.Writer) error { // Empty return nil } func (c *cardBase) load(r io.Reader) error { // Empty return nil }