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New improved I/O handler functions for the PDP-11

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This commit is contained in:
Jeff 2016-09-21 12:44:25 -07:00 • committed by Jeff Parsons
commit dfe367f53d
18 changed files with 847 additions and 1059 deletions
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49
modules/pc8080/lib/memory.js
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@ -384,11 +384,11 @@ Memory8080.prototype = {
setReadAccess: function(afn, fDirect) {
if (!fDirect || !this.cReadBreakpoints) {
this.readByte = afn[0] || this.readNone;
this.readShort = afn[1] || this.readShortDefault;
this.readShort = afn[2] || this.readShortDefault;
}
if (fDirect || fDirect === undefined) {
this.readByteDirect = afn[0] || this.readNone;
this.readShortDirect = afn[1] || this.readShortDefault;
this.readShortDirect = afn[2] || this.readShortDefault;
}
},
/**
@ -400,11 +400,11 @@ Memory8080.prototype = {
*/
setWriteAccess: function(afn, fDirect) {
if (!fDirect || !this.cWriteBreakpoints) {
this.writeByte = !this.fReadOnly && afn[2] || this.writeNone;
this.writeByte = !this.fReadOnly && afn[1] || this.writeNone;
this.writeShort = !this.fReadOnly && afn[3] || this.writeShortDefault;
}
if (fDirect || fDirect === undefined) {
this.writeByteDirect = afn[2] || this.writeNone;
this.writeByteDirect = afn[1] || this.writeNone;
this.writeShortDirect = afn[3] || this.writeShortDefault;
}
},
@ -807,18 +807,45 @@ Memory8080.prototype = {
/*
* This is the effective definition of afnNone, but we need not fully define it, because setAccess()
* uses these defaults when any of the 6 handlers (ie, 3 read handlers and 3 write handlers) are undefined.
* uses these defaults when any of the 4 handlers (ie, 2 byte handlers and 2 short handlers) are undefined.
*
Memory8080.afnNone = [Memory8080.prototype.readNone, Memory8080.prototype.readShortDefault, Memory8080.prototype.writeNone, Memory8080.prototype.writeShortDefault];
Memory8080.afnNone = [
Memory8080.prototype.readNone,
Memory8080.prototype.writeNone,
Memory8080.prototype.readShortDefault,
Memory8080.prototype.writeShortDefault
];
*/
Memory8080.afnNone = [];
Memory8080.afnNone = [];
Memory8080.afnMemory = [Memory8080.prototype.readByteMemory, Memory8080.prototype.readShortMemory, Memory8080.prototype.writeByteMemory, Memory8080.prototype.writeShortMemory];
Memory8080.afnChecked = [Memory8080.prototype.readByteChecked, Memory8080.prototype.readShortChecked, Memory8080.prototype.writeByteChecked, Memory8080.prototype.writeShortChecked];
Memory8080.afnMemory = [
Memory8080.prototype.readByteMemory,
Memory8080.prototype.writeByteMemory,
Memory8080.prototype.readShortMemory,
Memory8080.prototype.writeShortMemory
];
Memory8080.afnChecked = [
Memory8080.prototype.readByteChecked,
Memory8080.prototype.writeByteChecked,
Memory8080.prototype.readShortChecked,
Memory8080.prototype.writeShortChecked
];
if (TYPEDARRAYS) {
Memory8080.afnArrayBE = [Memory8080.prototype.readByteBE, Memory8080.prototype.readShortBE, Memory8080.prototype.writeByteBE, Memory8080.prototype.writeShortBE];
Memory8080.afnArrayLE = [Memory8080.prototype.readByteLE, Memory8080.prototype.readShortLE, Memory8080.prototype.writeByteLE, Memory8080.prototype.writeShortLE];
Memory8080.afnArrayBE = [
Memory8080.prototype.readByteBE,
Memory8080.prototype.writeByteBE,
Memory8080.prototype.readShortBE,
Memory8080.prototype.writeShortBE
];
Memory8080.afnArrayLE = [
Memory8080.prototype.readByteLE,
Memory8080.prototype.writeByteLE,
Memory8080.prototype.readShortLE,
Memory8080.prototype.writeShortLE
];
}
if (NODE) module.exports = Memory8080;