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Space Invaders works on the desktop now

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This commit is contained in:
Jeff Parsons 2016-05-14 23:12:39 -07:00
commit f09189c121
9 changed files with 269 additions and 116 deletions
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66
modules/pc8080/lib/chipset.js
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@ -107,24 +107,24 @@ Component.subclass(ChipSet);
ChipSet.SI_1978 = {
MODEL: 1978.1,
STATUS0: {
STATUS0: { // NOTE: STATUS0 not used by the SI_1978 ROMs; refer to STATUS1 instead
PORT: 0,
DIP4: 0x01, // self-test request at power up?
ALWAYS_SET: 0x0E, // always set
FIRE: 0x10, // 1 = fire
LEFT: 0x20, // 1 = move left
RIGHT: 0x40, // 1 = move right
PORT7: 0x80 // some connection to (undocumented) port 7
LEFT: 0x20, // 1 = left
RIGHT: 0x40, // 1 = right
PORT7: 0x80, // some connection to (undocumented) port 7
ALWAYS_SET: 0x0E // always set
},
STATUS1: {
PORT: 1,
CREDIT: 0x01, // credit (coin slot)
P2: 0x02, // 1 = 2P start
P1: 0x04, // 1 = 1P start
ALWAYS_SET: 0x08, // always set
P1_FIRE: 0x10, // 1 = P1 fire (cocktail machines only?)
P1_LEFT: 0x20, // 1 = P1 left (cocktail machines only?)
P1_RIGHT: 0x40 // 1 = P1 right (cocktail machines only?)
P1_FIRE: 0x10, // 1 = fire (P1 fire if cocktail machine?)
P1_LEFT: 0x20, // 1 = left (P1 left if cocktail machine?)
P1_RIGHT: 0x40, // 1 = right (P1 right if cocktail machine?)
ALWAYS_SET: 0x08 // always set
},
STATUS2: {
PORT: 2,
@ -134,7 +134,8 @@ ChipSet.SI_1978 = {
P2_FIRE: 0x10, // 1 = P2 fire (cocktail machines only?)
P2_LEFT: 0x20, // 1 = P2 left (cocktail machines only?)
P2_RIGHT: 0x40, // 1 = P2 right (cocktail machines only?)
DIP7: 0x80 // 0 = display coin info on demo ("attract") screen
DIP7: 0x80, // 0 = display coin info on demo ("attract") screen
ALWAYS_SET: 0x00
},
SHIFT_RESULT: { // bits 0-7 of barrel shifter result
PORT: 3
@ -273,9 +274,9 @@ ChipSet.prototype.powerDown = function(fSave, fShutdown)
*/
ChipSet.prototype.reset = function()
{
this.bStatus0 = 0;
this.bStatus1 = 0;
this.bStatus2 = 0;
this.bStatus0 = ChipSet.SI_1978.STATUS0.ALWAYS_SET;
this.bStatus1 = ChipSet.SI_1978.STATUS1.ALWAYS_SET;
this.bStatus2 = ChipSet.SI_1978.STATUS2.ALWAYS_SET;
this.wShiftData = 0;
this.bShiftCount = 0;
this.bSound1 = this.bSound2 = 0;
@ -351,6 +352,45 @@ ChipSet.prototype.stop = function()
*/
};
/**
* updateStatus0(bit, fSet)
*
* @this {ChipSet}
* @param {number} bit
* @param {boolean} fSet
*/
ChipSet.prototype.updateStatus0 = function(bit, fSet)
{
this.bStatus0 &= ~bit;
if (fSet) this.bStatus0 |= bit;
};
/**
* updateStatus1(bit, fSet)
*
* @this {ChipSet}
* @param {number} bit
* @param {boolean} fSet
*/
ChipSet.prototype.updateStatus1 = function(bit, fSet)
{
this.bStatus1 &= ~bit;
if (fSet) this.bStatus1 |= bit;
};
/**
* updateStatus2(bit, fSet)
*
* @this {ChipSet}
* @param {number} bit
* @param {boolean} fSet
*/
ChipSet.prototype.updateStatus2 = function(bit, fSet)
{
this.bStatus2 &= ~bit;
if (fSet) this.bStatus2 |= bit;
};
/**
* inSIStatus0(port, addrFrom)
*