1 // license:BSD-3-Clause
2 // copyright-holders:Curt Coder
3 /**********************************************************************
4
5 Mikro Assembler cartridge emulation
6
7 **********************************************************************/
8
9 #include "emu.h"
10 #include "mikro_assembler.h"
11
12
13
14 //**************************************************************************
15 // DEVICE DEFINITIONS
16 //**************************************************************************
17
18 DEFINE_DEVICE_TYPE(C64_MIKRO_ASSEMBLER, c64_mikro_assembler_cartridge_device, "c64_mikro_assembler", "C64 Mikro Assembler cartridge")
19
20
21
22 //**************************************************************************
23 // LIVE DEVICE
24 //**************************************************************************
25
26 //-------------------------------------------------
27 // c64_mikro_assembler_cartridge_device - constructor
28 //-------------------------------------------------
29
c64_mikro_assembler_cartridge_device(const machine_config & mconfig,const char * tag,device_t * owner,uint32_t clock)30 c64_mikro_assembler_cartridge_device::c64_mikro_assembler_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
31 device_t(mconfig, C64_MIKRO_ASSEMBLER, tag, owner, clock),
32 device_c64_expansion_card_interface(mconfig, *this)
33 {
34 }
35
36
37 //-------------------------------------------------
38 // device_start - device-specific startup
39 //-------------------------------------------------
40
device_start()41 void c64_mikro_assembler_cartridge_device::device_start()
42 {
43 }
44
45
46 //-------------------------------------------------
47 // c64_cd_r - cartridge data read
48 //-------------------------------------------------
49
c64_cd_r(offs_t offset,uint8_t data,int sphi2,int ba,int roml,int romh,int io1,int io2)50 uint8_t c64_mikro_assembler_cartridge_device::c64_cd_r(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2)
51 {
52 if (!roml || !romh || !io1 || !io2)
53 {
54 data = m_roml[offset & 0x1fff];
55 }
56
57 return data;
58 }
59