/
interpod.cpp
180 lines (127 loc) · 5.03 KB
/
interpod.cpp
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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Oxford Computer Systems Interpod IEC to IEEE interface emulation
*********************************************************************/
/*
PCB Layout
----------
INTERPOD 1000 ISS.3
|---------------------------------------|
| |
| ACIA ROM CPU |
| |
|CN1 75188 LS73 LS04 RIOT |
| 75189 |
| 7417 VIA |
|CN2 |
| 3446 3446 3446 |
| CN3 CN4 LD1 |
|---------------------------| CN5 |-|
|---------|
Notes:
All IC's shown.
ROM - 2716 "1.4"
CPU - Rockwell R6502P
RIOT - Rockwell R6532AP
VIA - Rockwell R6522P
ACIA - Thomson-CSF EF6850P
3446 - Motorola MC3446AP
CN1 - DB25 serial connector
CN2 - power connector
CN3 - DIN5 IEC connector
CN4 - DIN5 IEC connector
CN5 - 2x12 PCB edge IEEE-488 connector
LD1 - LED
*/
/*
TODO:
- everything
0 OPEN 2,4,31 : INPUT #2, A$ : CLOSE #2
1 PRINT A$
http://mikenaberezny.com/hardware/c64-128/interpod-ieee-488-interface/
*/
#include "emu.h"
#include "interpod.h"
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define R6502_TAG "u1"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(CBM_INTERPOD, cbm_interpod_device, "cbm_interpod", "Oxford Computer Systems Interpod")
//**************************************************************************
// DEVICE CONFIGURATION
//**************************************************************************
//-------------------------------------------------
// ROM( interpod )
//-------------------------------------------------
ROM_START( interpod )
ROM_REGION( 0x800, R6502_TAG, 0 )
ROM_DEFAULT_BIOS("v16")
ROM_SYSTEM_BIOS( 0, "v14", "Version 1.4" )
ROMX_LOAD( "1.4.u2", 0x000, 0x800, CRC(c5b71982) SHA1(614d677b7c6273f6b84fa61affaf91cfdaeed6a6), ROM_BIOS(0) )
ROM_SYSTEM_BIOS( 1, "v16", "Version 1.6" )
ROMX_LOAD( "1.6.u2", 0x000, 0x800, CRC(67bb0436) SHA1(7659c45b73f577233f7657c4da9141dcfe8b6d97), ROM_BIOS(1) )
ROM_END
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
const tiny_rom_entry *cbm_interpod_device::device_rom_region() const
{
return ROM_NAME( interpod );
}
//-------------------------------------------------
// ADDRESS_MAP( interpod_mem )
//-------------------------------------------------
void cbm_interpod_device::interpod_mem(address_map &map)
{
map(0x0000, 0x007f).mirror(0x3b80).m(m_riot, FUNC(mos6532_device::ram_map));
map(0x0400, 0x041f).mirror(0x3be0).m(m_riot, FUNC(mos6532_device::io_map));
map(0x2000, 0x2001).mirror(0x9ffe).rw(m_acia, FUNC(acia6850_device::read), FUNC(acia6850_device::write));
map(0x4000, 0x47ff).mirror(0xb800).rom().region(R6502_TAG, 0);
map(0x8000, 0x800f).mirror(0x5ff0).m(m_via, FUNC(via6522_device::map));
}
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
void cbm_interpod_device::device_add_mconfig(machine_config &config)
{
M6502(config, m_maincpu, 1000000);
m_maincpu->set_addrmap(AS_PROGRAM, &cbm_interpod_device::interpod_mem);
MOS6522(config, m_via, 1000000);
MOS6532(config, m_riot, 1000000);
ACIA6850(config, m_acia, 0);
ieee488_device::add_cbm_devices(config, nullptr);
RS232_PORT(config, m_rs232, default_rs232_devices, nullptr);
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// cbm_interpod_device - constructor
//-------------------------------------------------
cbm_interpod_device::cbm_interpod_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, CBM_INTERPOD, tag, owner, clock),
device_cbm_iec_interface(mconfig, *this),
m_maincpu(*this, R6502_TAG),
m_via(*this, "u4"),
m_riot(*this, "u3"),
m_acia(*this, "u5"),
m_ieee(*this, IEEE488_TAG),
m_rs232(*this, "rs232")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void cbm_interpod_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void cbm_interpod_device::device_reset()
{
}