mirror of
https://github.com/holub/mame
synced 2025-06-05 12:26:35 +03:00
08b42aabaa
(MESS) vic20: Added floating bus read support to VIC and cartridge interface. (MESS) vic10: Added floating bus read support to VIC-II and cartridge interface. (MESS) c64: Added floating bus read support to cartridge interface. [Curt Coder] (MESS) plus4: Added floating bus read support to TED and cartridge interface. Implemented some Diag264 test cartridge loopback connectors. [Curt Coder] (MESS) c16: Added PAL/NTSC variants. (nw) (MESS) v364: Fixed speech ROM mapping. (nw) (MESS) compis: Separated keyboard to its own file. (nw) (MESS) huebler: Cleanup. (nw)
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/**********************************************************************
|
|
|
|
COMAL 80 cartridge emulation
|
|
|
|
Copyright MESS Team.
|
|
Visit http://mamedev.org for licensing and usage restrictions.
|
|
|
|
**********************************************************************/
|
|
|
|
#include "c64_comal80.h"
|
|
|
|
|
|
|
|
//**************************************************************************
|
|
// DEVICE DEFINITIONS
|
|
//**************************************************************************
|
|
|
|
const device_type C64_COMAL80 = &device_creator<c64_comal80_cartridge_device>;
|
|
|
|
|
|
|
|
//**************************************************************************
|
|
// LIVE DEVICE
|
|
//**************************************************************************
|
|
|
|
//-------------------------------------------------
|
|
// c64_comal80_cartridge_device - constructor
|
|
//-------------------------------------------------
|
|
|
|
c64_comal80_cartridge_device::c64_comal80_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
|
|
device_t(mconfig, C64_COMAL80, "C64 COMAL 80 cartridge", tag, owner, clock),
|
|
device_c64_expansion_card_interface(mconfig, *this)
|
|
{
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// device_start - device-specific startup
|
|
//-------------------------------------------------
|
|
|
|
void c64_comal80_cartridge_device::device_start()
|
|
{
|
|
// state saving
|
|
save_item(NAME(m_bank));
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// device_reset - device-specific reset
|
|
//-------------------------------------------------
|
|
|
|
void c64_comal80_cartridge_device::device_reset()
|
|
{
|
|
m_bank = 0;
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// c64_cd_r - cartridge data read
|
|
//-------------------------------------------------
|
|
|
|
UINT8 c64_comal80_cartridge_device::c64_cd_r(address_space &space, offs_t offset, UINT8 data, int ba, int roml, int romh, int io1, int io2)
|
|
{
|
|
if (!roml || !romh)
|
|
{
|
|
offs_t addr = (m_bank << 14) | (offset & 0x3fff);
|
|
data = m_roml[addr];
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// c64_cd_w - cartridge data write
|
|
//-------------------------------------------------
|
|
|
|
void c64_comal80_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int roml, int romh, int io1, int io2)
|
|
{
|
|
if (!io1)
|
|
{
|
|
if (BIT(data, 7))
|
|
{
|
|
m_bank = data & 0x03;
|
|
}
|
|
}
|
|
}
|