mirror of
https://github.com/whscullin/apple2js.git
synced 2024-01-12 14:14:38 +00:00
D13 support, closer to real hardward behavior.
This commit is contained in:
Will Scullin
parent
bdb792f8fb
commit
c02ea762d8
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@ -10,7 +10,7 @@
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*/
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/*exported DiskII */
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/*globals bytify: false, debug: false
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/*globals bytify: false, debug: false, toHex: false
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base64_decode: false, base64_encode: false
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Uint8Array: false
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*/
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@ -72,42 +72,65 @@ function DiskII(io, slot, callbacks)
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// var DO = [0x0,0x7,0xE,0x6,0xD,0x5,0xC,0x4,
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// 0xB,0x3,0xA,0x2,0x9,0x1,0x8,0xF];
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var _DO = [0x0,0xD,0xB,0x9,0x7,0x5,0x3,0x1,
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0xE,0xC,0xA,0x8,0x6,0x4,0x2,0xF];
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var _DO = [
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0x0,0xD,0xB,0x9,0x7,0x5,0x3,0x1,
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0xE,0xC,0xA,0x8,0x6,0x4,0x2,0xF
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];
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// var PO = [0x0,0x8,0x1,0x9,0x2,0xa,0x3,0xb,
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// 0x4,0xc,0x5,0xd,0x6,0xe,0x7,0xf];
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var _PO = [0x0,0x2,0x4,0x6,0x8,0xa,0xc,0xe,
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0x1,0x3,0x5,0x7,0x9,0xb,0xd,0xf];
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var _PO = [
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0x0,0x2,0x4,0x6,0x8,0xa,0xc,0xe,
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0x1,0x3,0x5,0x7,0x9,0xb,0xd,0xf
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];
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var _trans = [0x96, 0x97, 0x9a, 0x9b, 0x9d, 0x9e, 0x9f, 0xa6,
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0xa7, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb2, 0xb3,
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0xb4, 0xb5, 0xb6, 0xb7, 0xb9, 0xba, 0xbb, 0xbc,
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0xbd, 0xbe, 0xbf, 0xcb, 0xcd, 0xce, 0xcf, 0xd3,
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0xd6, 0xd7, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde,
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0xdf, 0xe5, 0xe6, 0xe7, 0xe9, 0xea, 0xeb, 0xec,
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0xed, 0xee, 0xef, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6,
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0xf7, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff];
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// var D13O = [
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// 0x0, 0xa, 0x7, 0x4, 0x1, 0xb, 0x8, 0x5, 0x2, 0xc, 0x9, 0x6, 0x3
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// ];
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var _detrans = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x02, 0x03, 0x00, 0x04, 0x05, 0x06,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x08,
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0x00, 0x00, 0x00, 0x09, 0x0A, 0x0B, 0x0C, 0x0D,
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0x00, 0x00, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
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0x00, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x1B, 0x00, 0x1C, 0x1D, 0x1E,
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0x00, 0x00, 0x00, 0x1F, 0x00, 0x00, 0x20, 0x21,
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0x00, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x29, 0x2A, 0x2B,
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0x00, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32,
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0x00, 0x00, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
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0x00, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F];
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var _D13O = [
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0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc
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];
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var _trans53 = [
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0xab, 0xad, 0xae, 0xaf, 0xb5, 0xb6, 0xb7, 0xba,
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0xbb, 0xbd, 0xbe, 0xbf, 0xd6, 0xd7, 0xda, 0xdb,
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0xdd, 0xde, 0xdf, 0xea, 0xeb, 0xed, 0xee, 0xef,
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0xf5, 0xf6, 0xf7, 0xfa, 0xfb, 0xfd, 0xfe, 0xff
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];
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var _trans62 = [
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0x96, 0x97, 0x9a, 0x9b, 0x9d, 0x9e, 0x9f, 0xa6,
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0xa7, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb2, 0xb3,
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0xb4, 0xb5, 0xb6, 0xb7, 0xb9, 0xba, 0xbb, 0xbc,
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0xbd, 0xbe, 0xbf, 0xcb, 0xcd, 0xce, 0xcf, 0xd3,
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0xd6, 0xd7, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde,
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0xdf, 0xe5, 0xe6, 0xe7, 0xe9, 0xea, 0xeb, 0xec,
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0xed, 0xee, 0xef, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6,
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0xf7, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
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];
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var _detrans62 = [
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x02, 0x03, 0x00, 0x04, 0x05, 0x06,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x08,
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0x00, 0x00, 0x00, 0x09, 0x0A, 0x0B, 0x0C, 0x0D,
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0x00, 0x00, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
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0x00, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x1B, 0x00, 0x1C, 0x1D, 0x1E,
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0x00, 0x00, 0x00, 0x1F, 0x00, 0x00, 0x20, 0x21,
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0x00, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x29, 0x2A, 0x2B,
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0x00, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32,
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0x00, 0x00, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
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0x00, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F
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];
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function _debug() {
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// debug.apply(this, arguments);
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console.log.apply(this, arguments);
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}
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function _init() {
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@ -133,7 +156,7 @@ function DiskII(io, slot, callbacks)
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return ((xx << 1) | 0x01) & yy;
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}
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function _explodeSector(volume, track, sector, data) {
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function _explodeSector16(volume, track, sector, data) {
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var checksum;
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var buf = [], idx;
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@ -209,10 +232,113 @@ function DiskII(io, slot, callbacks)
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var last = 0;
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for (idx = 0; idx < 0x156; idx++) {
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var val = nibbles[idx];
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buf.push(_trans[last ^ val]);
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buf.push(_trans62[last ^ val]);
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last = val;
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}
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buf.push(_trans[last]);
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buf.push(_trans62[last]);
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buf = buf.concat([0xde, 0xaa, 0xf2]); // Epilog DE AA F2
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/*
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* Gap 3
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*/
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buf.push(0xff);
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return buf;
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}
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function _explodeSector13(volume, track, sector, data) {
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var checksum;
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var buf = [], idx;
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var gap;
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/*
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* Gap 1/3 (40/0x28 bytes)
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*/
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if (sector === 0) // Gap 1
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gap = 0x80;
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else { // Gap 3
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gap = track === 0 ? 0x28 : 0x26;
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}
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for (idx = 0; idx < gap; idx++) {
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buf.push(0xff);
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}
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/*
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* Address Field
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*/
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checksum = volume ^ track ^ sector;
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buf = buf.concat([0xd5, 0xaa, 0xb5]); // Address Prolog D5 AA B5
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buf = buf.concat(_fourXfour(volume));
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buf = buf.concat(_fourXfour(track));
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buf = buf.concat(_fourXfour(sector));
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buf = buf.concat(_fourXfour(checksum));
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buf = buf.concat([0xde, 0xaa, 0xeb]); // Epilog DE AA EB
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/*
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* Gap 2 (5 bytes)
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*/
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for (idx = 0; idx < 0x05; idx++) {
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buf.push(0xff);
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}
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/*
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* Data Field
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*/
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buf = buf.concat([0xd5, 0xaa, 0xad]); // Data Prolog D5 AA AD
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var nibbles = [];
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var jdx = 0;
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for (idx = 0x32; idx >= 0; idx--) {
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var a5 = data[jdx] >> 3;
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var a3 = data[jdx] & 0x07;
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jdx++;
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var b5 = data[jdx] >> 3;
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var b3 = data[jdx] & 0x07;
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jdx++;
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var c5 = data[jdx] >> 3;
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var c3 = data[jdx] & 0x07;
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jdx++;
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var d5 = data[jdx] >> 3;
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var d3 = data[jdx] & 0x07;
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jdx++;
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var e5 = data[jdx] >> 3;
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var e3 = data[jdx] & 0x07;
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jdx++;
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nibbles[idx + 0x00] = a5;
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nibbles[idx + 0x33] = b5;
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nibbles[idx + 0x66] = c5;
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nibbles[idx + 0x99] = d5;
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nibbles[idx + 0xcc] = e5;
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nibbles[idx + 0x100] = a3 << 2 | (d3 & 0x4) >> 1 | (e3 & 0x4) >> 2;
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nibbles[idx + 0x133] = b3 << 2 | (d3 & 0x2) | (e3 & 0x2) >> 1;
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nibbles[idx + 0x166] = c3 << 2 | (d3 & 0x1) << 1 | (e3 & 0x1);
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}
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nibbles[0xff] = data[jdx] >> 3;
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nibbles[0x199] = data[jdx] & 0x07;
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var val;
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var last = 0;
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for (idx = 0x199; idx >= 0x100; idx--) {
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val = nibbles[idx];
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buf.push(_trans53[last ^ val]);
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last = val;
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}
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for (idx = 0x0; idx < 0x100; idx++) {
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val = nibbles[idx];
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buf.push(_trans53[last ^ val]);
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last = val;
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}
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buf.push(_trans53[last]);
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buf = buf.concat([0xde, 0xaa, 0xeb]); // Epilog DE AA EB
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@ -240,12 +366,12 @@ function DiskII(io, slot, callbacks)
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}
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}
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}
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return JSON.stringify({'type': format,
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'encoding': 'base64',
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'volume': cur.volume,
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'data': data},
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null,
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pretty ? ' ' : null);
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return JSON.stringify({
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'type': format,
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'encoding': 'base64',
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'volume': cur.volume,
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'data': data
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}, null, pretty ? ' ' : null);
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}
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function _json_decode(drive, data) {
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@ -258,7 +384,7 @@ function DiskII(io, slot, callbacks)
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for (var s = 0; s < json.data[t].length; s++) {
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var _s = 15 - s;
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var d = base64_decode(json.data[t][_s]);
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track = track.concat(_explodeSector(v, t, _DO[_s], d));
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track = track.concat(_explodeSector16(v, t, _DO[_s], d));
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}
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tracks[t] = bytify(track);
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}
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@ -267,33 +393,31 @@ function DiskII(io, slot, callbacks)
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_cur.tracks = tracks;
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}
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function _readNext() {
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var result = 0;
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function _readWriteNext() {
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if (_skip || _writeMode) {
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var t = _cur.tracks[_cur.track >> 1];
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if (t && t.length) {
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if (_cur.head >= t.length)
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var track = _cur.tracks[_cur.track >> 1];
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if (track && track.length) {
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if (_cur.head >= track.length) {
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_cur.head = 0;
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}
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if (_writeMode) {
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t[_cur.head] = _latch;
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} else
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result = t[_cur.head];
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if (!_cur.readOnly) {
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track[_cur.head] = _latch;
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if (!_cur.dirty) {
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_updateDirty(_drive, true);
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}
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}
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} else {
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_latch = track[_cur.head];
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}
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++_cur.head;
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}
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} else {
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_latch = 0;
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}
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_skip = (++_skip % 4);
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return result;
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}
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function _writeNext(val) {
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if (_writeMode) {
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_latch = val;
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if (!_cur.dirty) {
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_updateDirty(_drive, true);
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}
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}
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_skip = (++_skip % 2);
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}
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function _readSector(drive, track, sector) {
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@ -345,12 +469,12 @@ function DiskII(io, slot, callbacks)
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var data2 = [];
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var last = 0;
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for (jdx = 0x55; jdx >= 0; jdx--) {
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val = _detrans[_readNext() - 0x80] ^ last;
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val = _detrans62[_readNext() - 0x80] ^ last;
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data2[jdx] = val;
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last = val;
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}
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for (jdx = 0; jdx < 0x100; jdx++) {
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val = _detrans[_readNext() - 0x80] ^ last;
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val = _detrans62[_readNext() - 0x80] ^ last;
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data[jdx] = val;
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last = val;
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}
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@ -388,7 +512,7 @@ function DiskII(io, slot, callbacks)
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[ 1,-2,-1, 0]];
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function setPhase(phase, on) {
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_debug('phase ' + phase + (on ? ' on' : ' off'));
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// _debug('phase ' + phase + (on ? ' on' : ' off'));
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if (on) {
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_cur.track += _phase_delta[_cur.phase][phase];
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_cur.phase = phase;
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@ -407,44 +531,46 @@ function DiskII(io, slot, callbacks)
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function _access(off, val) {
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var result = 0;
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var readMode = val === undefined;
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switch (off & 0x8f) {
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case LOC.PHASE0OFF:
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case LOC.PHASE0OFF: // 0x00
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setPhase(0, false);
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break;
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case LOC.PHASE0ON:
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case LOC.PHASE0ON: // 0x01
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setPhase(0, true);
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break;
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case LOC.PHASE1OFF:
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case LOC.PHASE1OFF: // 0x02
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setPhase(1, false);
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break;
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case LOC.PHASE1ON:
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case LOC.PHASE1ON: // 0x03
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setPhase(1, true);
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break;
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case LOC.PHASE2OFF:
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case LOC.PHASE2OFF: // 0x04
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setPhase(2, false);
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break;
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case LOC.PHASE2ON:
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case LOC.PHASE2ON: // 0x05
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setPhase(2, true);
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break;
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case LOC.PHASE3OFF:
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case LOC.PHASE3OFF: // 0x06
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setPhase(3, false);
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break;
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case LOC.PHASE3ON:
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case LOC.PHASE3ON: // 0x07
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setPhase(3, true);
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break;
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case LOC.DRIVEOFF:
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case LOC.DRIVEOFF: // 0x08
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_debug('Drive Off');
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_on = false;
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if (callbacks.driveLight) { callbacks.driveLight(_drive, false); }
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break;
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case LOC.DRIVEON:
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case LOC.DRIVEON: // 0x09
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_debug('Drive On');
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_on = true;
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if (callbacks.driveLight) { callbacks.driveLight(_drive, true); }
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break;
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case LOC.DRIVE1:
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case LOC.DRIVE1: // 0x0a
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_debug('Disk 1');
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_drive = 1;
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_cur = _drives[_drive - 1];
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|
|
@ -453,7 +579,7 @@ function DiskII(io, slot, callbacks)
|
|||
callbacks.driveLight(1, true);
|
||||
}
|
||||
break;
|
||||
case LOC.DRIVE2:
|
||||
case LOC.DRIVE2: // 0x0b
|
||||
_debug('Disk 2');
|
||||
_drive = 2;
|
||||
_cur = _drives[_drive - 1];
|
||||
|
|
@ -463,29 +589,46 @@ function DiskII(io, slot, callbacks)
|
|||
}
|
||||
break;
|
||||
|
||||
case LOC.DRIVEREAD:
|
||||
result = _readNext();
|
||||
// _debug('read: ' + toHex(result));
|
||||
case LOC.DRIVEREAD: // 0x0c
|
||||
_readWriteNext();
|
||||
break;
|
||||
|
||||
case LOC.DRIVEWRITE:
|
||||
// _debug('write: ' + toHex(val));
|
||||
if (val !== undefined) {
|
||||
_writeNext(val);
|
||||
case LOC.DRIVEWRITE: // 0x0d
|
||||
if (readMode && !_writeMode) {
|
||||
if (_cur.readOnly) {
|
||||
_latch = _latch | 0x80;
|
||||
_debug('Setting readOnly');
|
||||
} else {
|
||||
_latch = _latch & 0x7f;
|
||||
_debug('Clearing readOnly');
|
||||
}
|
||||
}
|
||||
break;
|
||||
case LOC.DRIVEREADMODE:
|
||||
|
||||
case LOC.DRIVEREADMODE: // 0x0e
|
||||
_debug('Read Mode');
|
||||
_writeMode = false;
|
||||
result = (_readNext() & 0x7f) | (_cur.readOnly ? 0x80 : 0x00);
|
||||
break;
|
||||
case LOC.DRIVEWRITEMODE:
|
||||
case LOC.DRIVEWRITEMODE: // 0x0f
|
||||
_debug('Write Mode');
|
||||
_writeMode = true;
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (readMode) {
|
||||
if ((off & 0x01) === 0) {
|
||||
result = _latch;
|
||||
// _debug('Read', toHex(result));
|
||||
} else {
|
||||
result = 0;
|
||||
}
|
||||
} else if (_writeMode) {
|
||||
_latch = val;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
|
|
@ -563,7 +706,6 @@ function DiskII(io, slot, callbacks)
|
|||
0x03,0x4c,0x01,0x03,0x4c,0x2d,0xff,0xff
|
||||
];
|
||||
*/
|
||||
|
||||
_init();
|
||||
|
||||
return {
|
||||
|
|
@ -645,12 +787,13 @@ function DiskII(io, slot, callbacks)
|
|||
_cur = _drives[_drive - 1];
|
||||
},
|
||||
rwts: function disk2_rwts(disk, track, sector) {
|
||||
return _readSector(disk, track, sector);
|
||||
var s = _drives[disk - 1].fmt == 'po' ? _PO[sector] : _DO[sector];
|
||||
return _readSector(disk, track, s);
|
||||
},
|
||||
setDisk: function disk2_setDisk(drive, disk) {
|
||||
var fmt = disk.type, readOnly = disk.readOnly;
|
||||
|
||||
var data, t, s;
|
||||
var data, t, s, _s;
|
||||
if (disk.encoding == 'base64') {
|
||||
data = [];
|
||||
for (t = 0; t < disk.data.length; t++) {
|
||||
|
|
@ -682,20 +825,26 @@ function DiskII(io, slot, callbacks)
|
|||
var track = [];
|
||||
if (fmt === 'nib') {
|
||||
track = data[t];
|
||||
} else if (fmt === 'd13') { // DOS 3.2 Order
|
||||
for (s = 0; s < data[t].length; s++) {
|
||||
track = track.concat(
|
||||
_explodeSector13(v, t, _D13O[s], data[t][_D13O[s]])
|
||||
);
|
||||
}
|
||||
} else {
|
||||
for (s = 0; s < data[t].length; s++) {
|
||||
var _s = 15 - s;
|
||||
_s = 15 - s;
|
||||
if (fmt === 'po') { // ProDOS Order
|
||||
track = track.concat(
|
||||
_explodeSector(v, t, _PO[s], data[t][s])
|
||||
_explodeSector16(v, t, _PO[s], data[t][s])
|
||||
);
|
||||
} else if (fmt === 'dsk') { // DOS Order
|
||||
} else if (fmt === 'dsk') { // DOS 3.3 Order
|
||||
track = track.concat(
|
||||
_explodeSector(v, t, _DO[_s], data[t][_s])
|
||||
_explodeSector16(v, t, _DO[_s], data[t][_s])
|
||||
);
|
||||
} else { // flat
|
||||
track = track.concat(
|
||||
_explodeSector(v, t, s, data[t][s])
|
||||
_explodeSector16(v, t, s, data[t][s])
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
@ -752,25 +901,34 @@ function DiskII(io, slot, callbacks)
|
|||
}
|
||||
}
|
||||
for (var t = 0; t < 35; t++) {
|
||||
var track, off, d;
|
||||
var track, off, d, s, _s;
|
||||
if (fmt === 'nib') {
|
||||
off = t * 0x1a00;
|
||||
track = new Uint8Array(data.slice(off, off + 0x1a00));
|
||||
} else if (fmt == 'd13') { // DOS 3.2 Order
|
||||
track = [];
|
||||
for (s = 0; s < 13; s++) {
|
||||
off = (13 * t + _D13O[s]) * 256;
|
||||
d = new Uint8Array(data.slice(off, off + 256));
|
||||
track = track.concat(
|
||||
_explodeSector13(v, t, _D13O[s], d)
|
||||
);
|
||||
}
|
||||
} else {
|
||||
track = [];
|
||||
for (var s = 0; s < 16; s++) {
|
||||
var _s = 15 - s;
|
||||
for (s = 0; s < 16; s++) {
|
||||
_s = 15 - s;
|
||||
if (fmt == 'po') { // ProDOS Order
|
||||
off = (16 * t + s) * 256;
|
||||
d = new Uint8Array(data.slice(off, off + 256));
|
||||
track = track.concat(
|
||||
_explodeSector(v, t, _PO[s], d)
|
||||
_explodeSector16(v, t, _PO[s], d)
|
||||
);
|
||||
} else if (fmt == 'dsk') { // DOS Order
|
||||
} else if (fmt == 'dsk') { // DOS 3.3 Order
|
||||
off = (16 * t + _s) * 256;
|
||||
d = new Uint8Array(data.slice(off, off + 256));
|
||||
track = track.concat(
|
||||
_explodeSector(v, t, _DO[_s], d)
|
||||
_explodeSector16(v, t, _DO[_s], d)
|
||||
);
|
||||
} else {
|
||||
return false;
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user