mirror of
https://github.com/ivanizag/izapple2.git
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42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package izapple2
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/*
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Simulates just what is needed to make Total Replay use the GS modes if the VidHD card is found
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See:
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https://github.com/a2-4am/4cade/blob/master/src/hw.vidhd.a
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http://www.applelogic.org/files/GSHARDWAREREF.pdf, page 89
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*/
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type cardVidHD struct {
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cardBase
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}
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func buildVidHDRom() []uint8 {
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data := make([]uint8, 256)
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data[0] = 0x24
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data[1] = 0xEA
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data[2] = 0x4C
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return data
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}
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const (
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ioDataNewVideo uint8 = 0x29
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)
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func (c *cardVidHD) assign(a *Apple2, slot int) {
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// The softswitches are outside the card reserved ss
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a.io.addSoftSwitchR(0x22, notImplementedSoftSwitchR, "VIDHD-TBCOLOR")
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a.io.addSoftSwitchW(0x22, notImplementedSoftSwitchW, "VIDHD-TBCOLOR")
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a.io.addSoftSwitchR(0x29, getStatusSoftSwitch(ioDataNewVideo), "VIDHD-NEWVIDEO")
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a.io.addSoftSwitchW(0x29, setStatusSoftSwitch(ioDataNewVideo), "VIDHD-NEWVIDEO")
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a.io.addSoftSwitchR(0x34, notImplementedSoftSwitchR, "VIDHD-CLOCKCTL")
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a.io.addSoftSwitchW(0x34, notImplementedSoftSwitchW, "VIDHD-CLOCKCTL")
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a.io.addSoftSwitchR(0x35, notImplementedSoftSwitchR, "VIDHD-SHADOW")
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a.io.addSoftSwitchW(0x35, notImplementedSoftSwitchW, "VIDHD-SHADOW")
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c.cardBase.assign(a, slot)
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}
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