apple2js/js/slot3.js

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/* -*- mode: JavaScript; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Copyright 2010-2013 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)
{
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);
}
};
}