mirror of
https://github.com/pevans/erc-c.git
synced 2024-10-15 15:24:24 +00:00
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
#ifndef _APPLE2_MEM_H_
|
|
#define _APPLE2_MEM_H_
|
|
|
|
#include "apple2.h"
|
|
#include "vm_segment.h"
|
|
|
|
/*
|
|
* Given a slot number (1-7), this will return the memory page address
|
|
* for the site of the ROM that is associated for the peripheral that
|
|
* would be connected there.
|
|
*/
|
|
#define APPLE2_PERIPHERAL_SLOT(n) \
|
|
(0xC000 + (n << 8))
|
|
|
|
/*
|
|
* This is the size of any peripheral's ROM that we can hold in memory
|
|
* (which is any page from $C100 - $C700).
|
|
*/
|
|
#define APPLE2_PERIPHERAL_SIZE 0x700
|
|
|
|
/*
|
|
* Peripheral ROM can only occupy a single page in memory.
|
|
*/
|
|
#define APPLE2_PERIPHERAL_PAGE 0x100
|
|
|
|
/*
|
|
* System ROM requires a full 16k; part of it is copied into several
|
|
* pages beginning at $C800, and much more go into $D000 - $FFFF.
|
|
*/
|
|
#define APPLE2_SYSROM_SIZE 0x4000
|
|
|
|
/*
|
|
* The size of our block of ROM is 12k
|
|
*/
|
|
#define APPLE2_ROM_SIZE 0x3000
|
|
|
|
/*
|
|
* Whereas the second bank of RAM is a mere 4k
|
|
*/
|
|
#define APPLE2_RAM2_SIZE 0x1000
|
|
|
|
/*
|
|
* This is the base address (or offset) for all bank-switched memory
|
|
*/
|
|
#define APPLE2_BANK_OFFSET 0xD000
|
|
|
|
|
|
extern vm_8bit apple2_mem_read_bank(vm_segment *, size_t, void *);
|
|
extern void apple2_mem_write_bank(vm_segment *, size_t, vm_8bit, void *);
|
|
extern void apple2_mem_map(apple2 *);
|
|
extern int apple2_mem_init_peripheral_rom(apple2 *);
|
|
extern int apple2_mem_init_sys_rom(apple2 *);
|
|
|
|
#endif
|