2020-08-06 16:35:34 +00:00
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package apple2
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/*
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Extended 80-Column Text AppleColor Card or Video7 RGB-SL7 card
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See:
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https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/Apple%20IIe/Apple%20IIe%20Extended%2080%20Column%20RGB%20Card/Manuals/Apple%20Ext80ColumnAppleColorCardHR%20Manual.pdf
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https://apple2online.com/web_documents/Video-7%20Manual%20KB.pdf
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https://mirrors.apple2.org.za/ftp.apple.asimov.net/documentation/hardware/video/DIGICARD%2064K%20Extended%2080%20Column%20RGB%20Card%20for%20Apple%20IIe%20Instruction%20Manual.pdf
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2020-08-09 14:42:16 +00:00
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Diagnostics disk:
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https://mirrors.apple2.org.za/ftp.apple.asimov.net/images/hardware/video/Video-7%20Apple%20II%20RGB%20Demo%20%28Video-7%2C%20Inc.%29%281984%29.dsk
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2020-08-06 16:35:34 +00:00
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It goes to the 80 column slot.
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To set the state it AN3 in graphics mode has to go off-on-off-on. Each pair off-on record the state of 80col:
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on step 0, an ANN3OFF moves to step 1
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on step 1, an ANN3ON moves to step 2, and the value of 80COL is copied to RGB flag 1
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on step 2, an ANN3OFF moves to step 3
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on step 3, an ANN3ON moves to step 4, and the value of 80COL is copied to RGB flag 2
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Modes by RGB flags 1 and 2:
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0-0: 560*192 mono
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1-1: 140*192 ntsc
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0-1: Mixed mode
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2020-08-10 18:52:17 +00:00
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1-0: 160*192 ntsc
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2020-08-06 16:35:34 +00:00
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*/
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type cardRGB struct {
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// cardBase, not a regular card
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step uint8
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}
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func setupRGBCard(a *Apple2) *cardRGB {
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var c cardRGB
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c.step = 0
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// Does not have ROM or private softswitches. It spies on the softswitches
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a.io.addSoftSwitchRW(0x50, func(io *ioC0Page) uint8 {
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io.softSwitchesData[ioFlagText] = ssOff
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// Reset RGB modes when entering graphics mode
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c.step = 0
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io.softSwitchesData[ioFlag1RGBCard] = ssOn
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io.softSwitchesData[ioFlag2RGBCard] = ssOn
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return 0
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}, "TEXTOFF")
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a.io.addSoftSwitchRW(0x5e, func(io *ioC0Page) uint8 {
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io.softSwitchesData[ioFlagAnnunciator3] = ssOff
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switch c.step {
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case 0:
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c.step++
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case 2:
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c.step++
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}
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return 0
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}, "ANN3OFF-RGB")
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a.io.addSoftSwitchRW(0x5f, func(io *ioC0Page) uint8 {
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io.softSwitchesData[ioFlagAnnunciator3] = ssOn
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switch c.step {
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case 1:
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io.softSwitchesData[ioFlag1RGBCard] = io.softSwitchesData[ioFlag80Col]
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c.step++
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case 3:
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io.softSwitchesData[ioFlag2RGBCard] = io.softSwitchesData[ioFlag80Col]
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c.step++
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}
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return 0
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}, "ANN3ON-RGB")
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return &c
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}
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