mirror of
https://github.com/whscullin/apple2js.git
synced 2024-01-12 14:14:38 +00:00
48 lines
1.3 KiB
JavaScript
48 lines
1.3 KiB
JavaScript
/* Copyright 2010-2016 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.
|
|
*/
|
|
|
|
/*exported Slot3*/
|
|
|
|
function Slot3(mmu, rom)
|
|
{
|
|
'use strict';
|
|
|
|
var auxRomFn = {
|
|
start: function auxRom_start() {
|
|
return 0xc8;
|
|
},
|
|
end: function auxRom_end() {
|
|
return 0xcf;
|
|
},
|
|
read: function auxRom_read(page, off) {
|
|
return rom.read(page, off);
|
|
},
|
|
write: function auxRom_write() {}
|
|
};
|
|
|
|
return {
|
|
start: function slot3_start() {
|
|
return 0xc3;
|
|
},
|
|
end: function slot3_end() {
|
|
return 0xc3;
|
|
},
|
|
read: function slot3_read(page, off) {
|
|
mmu.auxRom(0x3, auxRomFn);
|
|
return rom.read(page, off);
|
|
},
|
|
write: function slot3_write() {
|
|
mmu.auxRom(0x3, auxRomFn);
|
|
}
|
|
};
|
|
|
|
}
|