1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// license:BSD-3-Clause
// copyright-holders:Robbbert
/***************************************************************************
Digital Microsystems ZSBC-3
11/01/2010 Skeleton driver.
28/11/2010 Connected to a terminal
11/01/2011 Converted to Modern.
****************************************************************************
Monitor commands: [] indicates optional
Bx = Boot from device x (0 to 7)
Dx [y] = Dump memory (hex and ascii) in range x [to y]
Fx y z = Fill memory x to y with z
Gx = Execute program at address x
Ix = Display IN of port x
Ox y = Output y to port x
Sx = Enter memory editing mode, press enter for next address
Mx y = unknown (affects memory)
Tx = unknown (does strange things)
enter = dump memory from 9000 to 907F (why?)
****************************************************************************
TODO:
Everything really...
Devices of all kinds;
Use the other rom for something..
****************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "machine/z80ctc.h"
#include "machine/z80sio.h"
#include "machine/z80pio.h"
#include "machine/clock.h"
#include "bus/rs232/rs232.h"
class zsbc3_state : public driver_device
{
public:
zsbc3_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
{ }
void zsbc3(machine_config &config);
void zsbc3_io(address_map &map);
void zsbc3_mem(address_map &map);
private:
required_device<cpu_device> m_maincpu;
};
ADDRESS_MAP_START(zsbc3_state::zsbc3_mem)
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE( 0x0000, 0x07ff ) AM_ROM
AM_RANGE( 0x0800, 0xffff ) AM_RAM
ADDRESS_MAP_END
ADDRESS_MAP_START(zsbc3_state::zsbc3_io)
ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x08, 0x0b) //AM_DEVREADWRITE("pio", z80pio_device, read, write) // the control bytes appear to be for a PIO
AM_RANGE(0x28, 0x2b) AM_DEVREADWRITE("sio", z80sio_device, cd_ba_r, cd_ba_w)
AM_RANGE(0x30, 0x33) AM_DEVREADWRITE("ctc", z80ctc_device, read, write)
AM_RANGE(0x38, 0x38) // unknown device, init byte = C3
ADDRESS_MAP_END
/* Input ports */
static INPUT_PORTS_START( zsbc3 )
INPUT_PORTS_END
MACHINE_CONFIG_START(zsbc3_state::zsbc3)
/* basic machine hardware */
MCFG_CPU_ADD("maincpu",Z80, XTAL(16'000'000) / 4)
MCFG_CPU_PROGRAM_MAP(zsbc3_mem)
MCFG_CPU_IO_MAP(zsbc3_io)
MCFG_DEVICE_ADD("ctc", Z80CTC, XTAL(16'000'000) / 4)
MCFG_Z80CTC_ZC0_CB(DEVWRITELINE("sio", z80sio_device, txca_w))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("sio", z80sio_device, rxca_w))
MCFG_DEVICE_ADD("clk2mhz", CLOCK, XTAL(16'000'000) / 8)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("ctc", z80ctc_device, trg0))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("ctc", z80ctc_device, trg1))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("ctc", z80ctc_device, trg2))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("ctc", z80ctc_device, trg3))
MCFG_DEVICE_ADD("sio", Z80SIO, XTAL(16'000'000) / 4)
//MCFG_Z80SIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0)) // no evidence of a daisy chain because IM2 is not set
MCFG_Z80SIO_OUT_TXDA_CB(DEVWRITELINE("rs232", rs232_port_device, write_txd))
MCFG_Z80SIO_OUT_DTRA_CB(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
MCFG_Z80SIO_OUT_RTSA_CB(DEVWRITELINE("rs232", rs232_port_device, write_rts))
MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "terminal")
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("sio", z80sio_device, rxa_w))
MCFG_RS232_CTS_HANDLER(DEVWRITELINE("sio", z80sio_device, ctsa_w))
MCFG_DEVICE_ADD("pio", Z80PIO, XTAL(16'000'000) / 4)
//MCFG_Z80PIO_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( zsbc3 )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "54-3002_zsbc_monitor_1.09.bin", 0x0000, 0x0800, CRC(628588e9) SHA1(8f0d489147ec8382ca007236e0a95a83b6ebcd86))
ROM_REGION( 0x10000, "hdc", ROMREGION_ERASEFF )
ROM_LOAD( "54-8622_hdc13.bin", 0x0000, 0x0400, CRC(02c7cd6d) SHA1(494281ba081a0f7fbadfc30a7d2ea18c59e55101))
ROM_END
/* Driver */
/* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */
COMP( 1980, zsbc3, 0, 0, zsbc3, zsbc3, zsbc3_state, 0, "Digital Microsystems", "ZSBC-3", MACHINE_NO_SOUND_HW)
|