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v6.0 WIP: Konami Ultimate Collection cartridge support
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src/main/msx/slots/cartridges/special/scc/CartridgeKonamiUltimateCollection.js
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| // Copyright 2015 by Paulo Augusto Peccin. See license.txt distributed with this file. | ||
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| // Controls an internal SCC-I sound chip (in SCC or SCC-I mode) | ||
| // 0x4000 - 0xbfff | ||
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| // TODO DAC | ||
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| wmsx.CartridgeKonamiUltimateCollection = function(rom) { | ||
| "use strict"; | ||
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| function init(self) { | ||
| self.rom = rom; | ||
| bytes = wmsx.Util.asNormalArray(rom.content); | ||
| self.bytes = bytes; | ||
| } | ||
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| this.connect = function(machine) { | ||
| scc.setAudioSocket(machine.getAudioSocket()); | ||
| if (sccConnected) connectSCC(); // needed in LoadStates | ||
| }; | ||
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| this.disconnect = function(machine) { | ||
| scc.disconnectAudio(); | ||
| }; | ||
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| this.powerOn = function() { | ||
| this.reset(); | ||
| }; | ||
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| this.powerOff = function() { | ||
| scc.disconnectAudio(); | ||
| }; | ||
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| this.reset = function() { | ||
| mapperMode = 0; banksOffset = 0; addressOffset = 0; | ||
| bank1No = 0; bank2No = 1; bank3No = 2; bank4No = 3; | ||
| sccSelected = scciSelected = sccConnected = false; | ||
| scc.reset(); | ||
| setSCCMode(0); | ||
| }; | ||
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| this.read = function(address) { | ||
| // wmsx.Util.log("Read: " + wmsx.Util.toHex4(address)); | ||
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| // SCC Read | ||
| if (!(address & 0x0100)) { | ||
| if ((address >= 0x9800 && address < 0x9ffe && sccSelected && sccMode === 0x00) | ||
| || (address >= 0xb800 && address < 0xbffe && scciSelected && sccMode === 0x20)) | ||
| return scc.read(address); | ||
| } | ||
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| switch (address & 0xe000) { | ||
| case 0x4000: | ||
| return bytes[addressOffset | (((bank1No + banksOffset) & 0xff) << 13) | (address & 0x1fff)]; | ||
| case 0x6000: | ||
| return bytes[addressOffset | (((bank2No + banksOffset) & 0xff) << 13) | (address & 0x1fff)]; | ||
| case 0x8000: | ||
| return bytes[addressOffset | (((bank3No + banksOffset) & 0xff) << 13) | (address & 0x1fff)]; | ||
| case 0xa000: | ||
| return bytes[addressOffset | (((bank4No + banksOffset) & 0xff) << 13) | (address & 0x1fff)]; | ||
| default: | ||
| return 0xff; | ||
| } | ||
| }; | ||
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| this.write = function(address, value) { | ||
| // wmsx.Util.log("Write: " + wmsx.Util.toHex4(address) + ', ' + value); | ||
|
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| // SCC Write | ||
| if (!(address & 0x0100)) { | ||
| if ((sccMode === 0x00 && address >= 0x9800 && address < 0x9ffe && sccSelected) | ||
| || (sccMode === 0x20 && address >= 0xb800 && address < 0xbffe && scciSelected)) | ||
| return scc.write(address, value); | ||
| } | ||
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| // Mapper and Offset registers | ||
| if (!(mapperMode & 0x04)) { // mapper reg enabled | ||
| if (address === 0x7fff) setMapperMode(value); | ||
| else if (address === 0x7ffe) setMapperOffset(value); | ||
| } | ||
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| // Bank Switching | ||
| if (!(mapperMode & 0x02)) { // bank switching enabled | ||
| if (!(mapperMode & 0x20)) { | ||
| // KonamiSCC | ||
| switch (address & 0xe000) { | ||
| case 0x4000: | ||
| if (address >= 0x5000 && address <= 0x57ff) | ||
| bank1No = value; | ||
| break; | ||
| case 0x6000: | ||
| if (address >= 0x7000 && address <= 0x77ff) | ||
| bank2No = value; | ||
| break; | ||
| case 0x8000: | ||
| if (address >= 0x9000 && address <= 0x97ff) { | ||
| bank3No = value; | ||
| sccSelected = (value & 0x3f) === 0x3f; // Special value to activate the SCC | ||
| } | ||
| break; | ||
| case 0xa000: | ||
| if (address >= 0xb000 && address <= 0xb7ff) { | ||
| bank4No = value; | ||
| scciSelected = (value & 0x80) === 0x80; // Special value to activate the SCC-I | ||
| } | ||
| break; | ||
| } | ||
| } else { | ||
| // Konami | ||
| switch (address & 0xe000) { | ||
| case 0x4000: | ||
| if ((mapperMode & 0x08) === 0 && address >= 0x5000 && address <= 0x57ff) // DAC disabled? | ||
| bank1No = value; | ||
| break; | ||
| case 0x6000: | ||
| bank2No = value; | ||
| break; | ||
| case 0x8000: | ||
| bank3No = value; | ||
| sccSelected = (value & 0x3f) === 0x3f; // Special value to activate the SCC | ||
| break; | ||
| case 0xa000: | ||
| bank4No = value; | ||
| scciSelected = (value & 0x80) === 0x80; // Special value to activate the SCC-I | ||
| break; | ||
| } | ||
| } | ||
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| // SCC Mode register | ||
| if (address === 0xbffe || address === 0xbfff) | ||
| setSCCMode(value); | ||
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| if ((sccSelected || scciSelected) && !sccConnected) connectSCC(); | ||
| } | ||
| }; | ||
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| function setMapperMode(value) { | ||
| mapperMode = value; | ||
| addressOffset = (value & 0xc0) << 15; | ||
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| // console.log("MapperMode:", value.toString(16)); | ||
| } | ||
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| function setMapperOffset(value) { | ||
| banksOffset = value; | ||
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| // console.log("MapperOffset:", value); | ||
| } | ||
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| function setSCCMode(pMode) { | ||
| sccMode = pMode & 0x30; // sccMode & 0x10 disables SCC access! | ||
| scc.setSCCIMode((pMode & 0x20) !== 0); | ||
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| // console.log("SCCMode:", sccMode); | ||
| } | ||
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| function connectSCC() { | ||
| scc.connectAudio(); | ||
| sccConnected = true; | ||
| } | ||
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| var bytes; | ||
| this.bytes = null; | ||
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| var sccMode, mapperMode, banksOffset, addressOffset; | ||
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| var bank1No, bank2No, bank3No, bank4No; | ||
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| var scc = new wmsx.SCCIAudio(); | ||
| var sccSelected, scciSelected = false; | ||
| var sccConnected = false; | ||
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| this.rom = null; | ||
| this.format = wmsx.SlotFormats.KonamiUltimateCollection; | ||
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| // TODO Savestate ------------------------------------------- | ||
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| this.saveState = function() { | ||
| return { | ||
| f: this.format.name, | ||
| r: this.rom.saveState(), | ||
| b: wmsx.Util.compressInt8BitArrayToStringBase64(bytes), | ||
| m: sccMode, | ||
| b1: bank1No, | ||
| b2: bank2No, | ||
| b3: bank3No, | ||
| b4: bank4No, | ||
| scc: scc.saveState(), | ||
| scs: sccSelected, | ||
| sis: scciSelected, | ||
| scn: sccConnected | ||
| }; | ||
| }; | ||
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| this.loadState = function(s) { | ||
| this.format = wmsx.SlotFormats[s.f]; | ||
| this.rom = wmsx.ROM.loadState(s.r); | ||
| bytes = wmsx.Util.uncompressStringBase64ToInt8BitArray(s.b, bytes); | ||
| this.bytes = bytes; | ||
| bank1No = s.b1; | ||
| bank2No = s.b2; | ||
| bank3No = s.b3; | ||
| bank4No = s.b4; | ||
| setSCCMode(s.m); | ||
| scc.loadState(s.scc); | ||
| sccSelected = s.scs; | ||
| scciSelected = s.sis; | ||
| sccConnected = s.scn; | ||
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| if (sccConnected) connectSCC(); | ||
| }; | ||
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| this.eval = function(str) { | ||
| return eval(str); | ||
| }; | ||
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| if (rom) init(this); | ||
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| }; | ||
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| wmsx.CartridgeKonamiUltimateCollection.prototype = wmsx.Slot.base; | ||
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| wmsx.CartridgeKonamiUltimateCollection.recreateFromSaveState = function(state, previousSlot) { | ||
| var cart = previousSlot || new wmsx.CartridgeKonamiUltimateCollection(); | ||
| cart.loadState(state); | ||
| return cart; | ||
| }; | ||
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| /* | ||
| Documentation from Manuel Pazos (producer of the cartridge) | ||
| Konami Ultimate Collection shares some features of MegaFlashROM SCC+ SD. | ||
| It uses the same flashROM, SCC/SCC+, Konami and Konami SCC mappers, etc. | ||
| [OFFSET REGISTER (#7FFE)] | ||
| 7-0: Bank offset | ||
| [MAPPER REGISTER (#7FFF)] | ||
| 7 A21 \ | ||
| 6 A20 / FlashROM address lines to switch 2 MB banks. | ||
| 5 Mapper mode : Select Konami mapper (0=SCC or 1=normal). [1] | ||
| 4 Flash write enable | ||
| 3 Disable #4000-#5FFF mapper in Konami mode, Enable DAC (works like the DAC of Synthesizer or Majutsushi) | ||
| 2 Disable mapper register | ||
| 1 Disable mapper (bank switching) | ||
| 0 no function anymore (was mapper limits) | ||
| */ |
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