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Convert apple1io to Typescript

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This commit is contained in:
Will Scullin 2023-08-05 19:09:12 -07:00
parent 970f838132
commit 23a1cb83a8
2 changed files with 104 additions and 97 deletions
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97
js/apple1io.js
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@ -1,97 +0,0 @@
/* Copyright 2010-2019 Will Scullin <scullin@scullinsteel.com>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
export default function Apple1IO(text) {
var _key = 0;
var _keyReady = false;
var _displayReady = false;
var _nextDSP = 0;
var _buffer = [];
var LOC = {
KBD: 0x10,
KBDRDY: 0x011,
DSP: 0x12,
DSPCTL: 0x13
};
return {
start: function() { return 0xd0; },
end: function() { return 0xd0; },
read: function(page, off) {
var result = 0;
off &= 0x13;
switch (off) {
case LOC.KBD:
// Keyboard
if (_buffer.length) {
result = _buffer.shift().toUpperCase().charCodeAt(0) & 0x7f;
_keyReady = (_buffer.length > 0);
} else {
result = _key;
_keyReady = false;
}
result |= 0x80;
break;
case LOC.KBDRDY:
result = _keyReady ? 0x80 : 0x00;
break;
case LOC.DSP:
// Display
// result = (Math.random() > 0.5) ? 0x80 : 0x00;
result = (Date.now() > _nextDSP) ? 0x00 : 0x80;
break;
case LOC.DSPCTL:
break;
}
return result;
},
write: function(page, off, val) {
off &= 0x13;
switch (off) {
case LOC.KBD:
break;
case LOC.KBDRDY:
break;
case LOC.DSP:
// Display
if (_displayReady) {
text.write(val);
}
_nextDSP = Date.now() + ((_buffer.length > 0) ? 0 : 17);
break;
case LOC.DSPCTL:
// Don't pretend we care what the value was...
_displayReady = true;
break;
}
},
reset: function apple1io_reset() {
text.clear();
_buffer = [];
_keyReady = false;
_displayReady = false;
},
keyUp: function apple1io_keyUp() {
},
keyDown: function apple1io_keyDown(key) {
_key = key;
_keyReady = true;
},
paste: function apple1io_paste(buffer) {
buffer = buffer.replace(/\/\/.*\n/g, '');
buffer = buffer.replace(/\n/g, '\r');
_buffer = buffer.split('');
_keyReady = true;
}
};
}

104
js/apple1io.ts Normal file
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@ -0,0 +1,104 @@
/* Copyright 2010-2023 Will Scullin <scullin@scullinsteel.com>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
import { TextPage } from "./canvas1";
import type { byte } from "./types";
const LOC = {
KBD: 0x10,
KBDRDY: 0x011,
DSP: 0x12,
DSPCTL: 0x13,
} as const;
export default class Apple1IO {
_key = 0;
_keyReady = false;
_displayReady = false;
_nextDSP = 0;
_buffer: string[] = [];
constructor(private text: TextPage) {}
start() {
return 0xd0;
}
end() {
return 0xd0;
}
read(_page: byte, off: byte): byte {
var result = 0;
off &= 0x13;
switch (off) {
case LOC.KBD:
// Keyboard
const key = this._buffer.shift();
if (key != null) {
result = key.toUpperCase().charCodeAt(0) & 0x7f;
this._keyReady = this._buffer.length > 0;
} else {
result = this._key;
this._keyReady = false;
}
result |= 0x80;
break;
case LOC.KBDRDY:
result = this._keyReady ? 0x80 : 0x00;
break;
case LOC.DSP:
// Display
// result = (Math.random() > 0.5) ? 0x80 : 0x00;
result = Date.now() > this._nextDSP ? 0x00 : 0x80;
break;
case LOC.DSPCTL:
break;
}
return result;
}
write(_page: byte, off: byte, val: byte): void {
off &= 0x13;
switch (off) {
case LOC.KBD:
break;
case LOC.KBDRDY:
break;
case LOC.DSP:
// Display
if (this._displayReady) {
this.text.write(val);
}
this._nextDSP = Date.now() + (this._buffer.length > 0 ? 0 : 17);
break;
case LOC.DSPCTL:
// Don't pretend we care what the value was...
this._displayReady = true;
break;
}
}
reset() {
this.text.clear();
this._buffer = [];
this._keyReady = false;
this._displayReady = false;
}
keyUp() {}
keyDown(key: byte) {
this._key = key;
this._keyReady = true;
}
paste(buffer: string) {
buffer = buffer.replace(/\/\/.*\n/g, "");
buffer = buffer.replace(/\n/g, "\r");
this._buffer = buffer.split("");
this._keyReady = true;
}
}