50 lines
911 B
Go
50 lines
911 B
Go
package apple2
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import (
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"io"
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)
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type card interface {
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loadRom(filename string)
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assign(a *Apple2, slot int)
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persistent
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}
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type cardBase struct {
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a *Apple2
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rom *memoryRange
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slot int
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ssr [16]softSwitchR
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ssw [16]softSwitchW
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}
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func (c *cardBase) loadRom(filename string) {
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if c.a != nil {
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panic("Rom must be loaded before inserting the card in the slot")
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}
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data := loadResource(filename)
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c.rom = newMemoryRange(0, data)
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}
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func (c *cardBase) assign(a *Apple2, slot int) {
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c.a = a
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c.slot = slot
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if slot != 0 && c.rom != nil {
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c.rom.base = uint16(0xc000 + slot*0x100)
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a.mmu.setPagesRead(uint8(0xc0+slot), uint8(0xc0+slot), c.rom)
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}
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for i := 0; i < 0x10; i++ {
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a.io.addSoftSwitchR(uint8(0xC80+slot*0x10+i), c.ssr[i])
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a.io.addSoftSwitchW(uint8(0xC80+slot*0x10+i), c.ssw[i])
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}
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}
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func (c *cardBase) save(w io.Writer) {
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// Empty
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}
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func (c *cardBase) load(r io.Reader) {
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// Empty
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}
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