update 0.7.0
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Rupert Hausberger
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177
sae/expansion.js
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177
sae/expansion.js
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/**************************************************************************
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* SAE - Scripted Amiga Emulator
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*
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* https://github.com/naTmeg/ScriptedAmigaEmulator
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*
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* ©2012 Rupert Hausberger
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* Commercial use is prohibited.
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*
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**************************************************************************/
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function Board_A2058() {
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const MEM_8MB = 0x00;
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const MEM_4MB = 0x07;
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const MEM_2MB = 0x06;
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const MEM_1MB = 0x05;
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const MEM_512KB = 0x04;
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const MEM_256KB = 0x03;
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//const MEM_128KB = 0x02;
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//const MEM_64KB = 0x01;
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//const SAME_SLOT = 0x08; /* Next card is in the same Slot */
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//const ROM_CARD = 0x10; /* Card has valid ROM */
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const ADD_MEMORY = 0x20; /* Add Memory to List of Free Ram */
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const ZORRO2 = 0xc0; /* Type of Expansion Card */
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//const ZORRO3 = 0x80;
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const CARE_ADDR = 0x80; /* Adress HAS to be $200000-$9fffff */
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const VENDOR_COMMODORE = 514;
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const PRODUCT_A2058 = 10;
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this.info = function() {
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//BUG.info('Board_A2058.info()');
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var type;
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switch (AMIGA.mem.fast.size) {
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case 0x080000: type = ZORRO2 + ADD_MEMORY + MEM_512KB; break;
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case 0x100000: type = ZORRO2 + ADD_MEMORY + MEM_1MB; break;
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case 0x200000: type = ZORRO2 + ADD_MEMORY + MEM_2MB; break;
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case 0x400000: type = ZORRO2 + ADD_MEMORY + MEM_4MB; break;
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case 0x800000: type = ZORRO2 + ADD_MEMORY + MEM_8MB; break;
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}
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return {
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name:'Commodore A2058',
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vendor:VENDOR_COMMODORE,
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product:PRODUCT_A2058,
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serial:1,
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type:type,
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flags:CARE_ADDR,
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rom:0,
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ctrl:0
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};
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}
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}
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function Board_Dummy() {
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this.info = function() {
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//BUG.info('Board_Dummy.info()');
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return {
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name:null,
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vendor:0,
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product:0,
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serial:0,
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type:0,
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flags:0,
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rom:0,
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ctrl:0
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};
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}
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}
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function Expansion() {
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const MAX_EXPANSION_BOARDS = 5;
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var mem = {
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data:null,
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lo:0,
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hi:0
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};
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var boards = [];
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var board = 0;
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this.setup = function() {
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mem.data = new Uint16Array(0x8000);
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boards = [];
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if (AMIGA.mem.fast.size > 0)
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boards[0] = new Board_A2058();
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else
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boards[0] = new Board_Dummy();
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for (var i = 1; i < MAX_EXPANSION_BOARDS; i++)
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boards[i] = new Board_Dummy();
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}
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this.reset = function() {
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board = 0;
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this.config(board);
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}
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this.clear = function() {
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for (var i = 0; i < mem.data.length; i++)
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mem.data[i] = 0;
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}
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this.write = function (addr, value) {
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mem.data[(addr >> 1)] = (value & 0xf0) << 8;
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mem.data[(addr >> 1) + 1] = (value & 0x0f) << 12;
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}
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this.load8 = function (addr) {
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addr &= 0xffff;
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var value = (mem.data[addr >>> 1] >> ((addr & 1) ? 0 : 8)) & 0xff;
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if (addr == 0 || addr == 2 || addr == 0x40 || addr == 0x42)
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return value;
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return ~value & 0xff;
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}
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this.store8 = function (addr, value) {
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switch (addr & 0xff) {
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case 0x30:
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case 0x32:
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mem.hi = 0;
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mem.lo = 0;
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this.write(0x48, 0x00);
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break;
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case 0x48:
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mem.hi = value;
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//BUG.info('Expansion.store8() board %d done.', board + 1);
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++board;
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if (board <= MAX_EXPANSION_BOARDS)
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this.config(board);
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else
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this.clear();
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break;
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case 0x4a:
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mem.lo = value;
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break;
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case 0x4c:
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//BUG.info('Expansion.store8() board %d faild.', board + 1);
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++board;
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if (board <= MAX_EXPANSION_BOARDS)
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this.config(board);
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else
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this.clear();
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break;
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}
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}
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this.config = function(board) {
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var info = boards[board].info();
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this.clear();
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if (info.name) {
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BUG.info('Expansion.config() Added \'%s\' into slot %d', info.name, board + 1);
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this.write(0x00, info.type);
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this.write(0x08, info.flags);
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this.write(0x04, info.product);
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this.write(0x10, info.vendor >> 8);
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this.write(0x14, info.vendor & 0x0f);
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this.write(0x18, (info.serial >> 24) & 0xff);
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this.write(0x1c, (info.serial >> 16) & 0xff);
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this.write(0x20, (info.serial >> 8) & 0xff);
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this.write(0x24, info.serial & 0xff);
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this.write(0x28, (info.rom >> 8) & 0xff);
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this.write(0x2c, info.rom & 0xff);
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this.write(0x40, info.ctrl);
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}
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}
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}
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