55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package izapple2
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import (
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"os"
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)
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/*
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Apple II Parallel Printer Interface card.
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See:
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https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Parallel/Apple%20II%20Parallel%20Printer%20Interface%20Card/
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*/
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// CardParallelPrinter represents a Parallel Printer Interface card
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type CardParallelPrinter struct {
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cardBase
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file *os.File
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}
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// NewCardParallelPrinter creates a new CardParallelPrinter
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func NewCardParallelPrinter() *CardParallelPrinter {
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var c CardParallelPrinter
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c.name = "Parallel Printer Interface"
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c.loadRomFromResource("<internal>/Apple II Parallel Printer Interface Card ROM fixed.bin")
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return &c
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}
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func (c *CardParallelPrinter) assign(a *Apple2, slot int) {
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f, err := os.OpenFile(printerFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
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if err != nil {
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panic(err)
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}
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c.file = f
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c.addCardSoftSwitchW(0, func(value uint8) {
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c.printByte(value)
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}, "PARALLELDEVW")
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c.addCardSoftSwitchR(4, func() uint8 {
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return 0xff // TODO: What are the bit values?
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}, "PARALLELSTATUSR")
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c.cardBase.assign(a, slot)
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}
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const printerFile = "printer.out"
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func (c *CardParallelPrinter) printByte(value uint8) {
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// As text the MSB has to be removed, but if done, graphics modes won't work
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//value = value & 0x7f // Remove the MSB bit
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c.file.Write([]byte{value})
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}
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