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eis_twib: WIP ISA8 card, an IBM terminal emulator board for the Ericsson PC

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This commit is contained in:
Joakim Larsson Edstrom 2019-10-11 21:45:43 +02:00
parent 651872a73c
commit ddcd5eb92a
5 changed files with 286 additions and 0 deletions
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2
scripts/src/bus.lua
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@ -1379,6 +1379,8 @@ if (BUSES["ISA"]~=null) then
MAME_DIR .. "src/devices/bus/isa/myb3k_fdc.h",
MAME_DIR .. "src/devices/bus/isa/eis_sad8852.cpp",
MAME_DIR .. "src/devices/bus/isa/eis_sad8852.h",
MAME_DIR .. "src/devices/bus/isa/eis_twib.cpp",
MAME_DIR .. "src/devices/bus/isa/eis_twib.h",
MAME_DIR .. "src/devices/bus/isa/lbaenhancer.cpp",
MAME_DIR .. "src/devices/bus/isa/lbaenhancer.h",
MAME_DIR .. "src/devices/bus/isa/np600.cpp",

236
src/devices/bus/isa/eis_twib.cpp Normal file
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@ -0,0 +1,236 @@
// license:BSD-3-Clause
// copyright-holders:Joakim Larsson Edstrom
/***********************************************************************************************************
*
* Ericsson Information Systems/Nokia Data/ICL, SAD 8852 IBM 3270/5250 terminal emulation adapter
*
* This board is a terminal adapter for XT class PC machines to be connected as a terminal to
* IBM mainframes. There are two on board connectors, a BNC connector to act as a 3270 terminal
* and a twinax connector for the older 5250 terminal.
*
* TODO:
* - Hook up 8274 fully
* - Add bitbanger device and hook it up to an (emulated?!) IBM mainframe
*
************************************************************************************************************/
/*
Links:
------
https://github.com/MattisLind/alfaskop_emu
Ericsson manufactured board - marked 83016053-30, assembled in 1984 indicated by chip dates
+--------------------------------------------------------------------------------------+ ___
|O 83016053-30 IC11 IC20 X1 |o|_||
| IC14 IC15 74LS74 74S37 19.170MHz |____|
| NDK 4Y ||
| RS232 IC13 IC18 ||
| IC12 ULA 2C143E Ferranti ||---
| X.27 i8274 MPSC P1|| |= Twinax (5250)
| serial controller IC19 IC17 ||---
| P3 IC16 754528P LM339 1234567890 ||
| IC10 SW2 DIP ||
| 74LS08 IC21 RP2 Resistor SIL ||
| W2 74LS30 IC2 IC8 ||
| IC5 IC1 IC7 74LS125 74LS240 ||
| 74LS04 74LS244 RP1 74LS86 W1 CSA1 CSA2 ||---
| IC4 IC3 Resistor DIL IC6 ooooo o5 o5 IC9 P2|| |- BNC(3270)
| 74LS00 74LS00 1234567890 74LS86 ooooo 1o o4 1o o4 74LS245 ||---
| SW1 DIP 2o o3 2o o3 ____|
+----------------------------------------------------------------------------------|o___|
||||||||||||||||||||||||| |
Notes |
------------------------------------------------------------------------------ |
IC13-IC16 unpopulated IC:s
CSA1,CSA2 unpopulated jumper areas
W2 unpopulated jumper area
P3 unpopulated connector RS232/X.27(RS422)
General description
-------------------
This is a passive ISA8 board that should be fitted into an Ericsson PC (epc) and
driven by suitable software. It was replaced by the ISA16 SAD8852 intelligent TWIB
board for WS286 and higher a few years later.
*/
#include "emu.h"
#include "eis_twib.h"
#include "machine/z80sio.h"
#define LOG_READ (1U << 1)
#define LOG_IRQ (1U << 2)
//#define VERBOSE (LOG_IRQ)
//#define LOG_OUTPUT_STREAM std::cout
#include "logmacro.h"
#define LOGR(...) LOGMASKED(LOG_READ, __VA_ARGS__)
#define LOGIRQ(...) LOGMASKED(LOG_IRQ, __VA_ARGS__)
#ifdef _MSC_VER
#define FUNCNAME __func__
#else
#define FUNCNAME __PRETTY_FUNCTION__
#endif
DEFINE_DEVICE_TYPE(ISA8_EIS_TWIB, isa8_eistwib_device, "eistwib", "EIS TWIB IBM mainframe terminal adapter")
//-------------------------------------------------
// Access methods from ISA bus
//-------------------------------------------------
READ8_MEMBER( isa8_eistwib_device::twib_r )
{
LOGR("%s : offset=%d\n", FUNCNAME, offset);
return m_uart8274->cd_ba_r(offset);
}
WRITE8_MEMBER( isa8_eistwib_device::twib_w )
{
LOG("%s : offset=%d data=0x%02x\n", FUNCNAME, offset, data);
m_uart8274->cd_ba_w(offset, data);
}
//----------------------------------------------------------
// UI I/O
//----------------------------------------------------------
static INPUT_PORTS_START( eistwib_ports )
PORT_START("SW1")
PORT_DIPNAME( 0x3f0, 0x380, "I/O Base address" )
PORT_DIPSETTING( 0x000, "0x000" )
PORT_DIPSETTING( 0x010, "0x010" )
PORT_DIPSETTING( 0x020, "0x020" )
PORT_DIPSETTING( 0x030, "0x030" )
PORT_DIPSETTING( 0x040, "0x040" )
PORT_DIPSETTING( 0x050, "0x050" )
PORT_DIPSETTING( 0x060, "0x060" )
PORT_DIPSETTING( 0x070, "0x070" )
PORT_DIPSETTING( 0x080, "0x080" )
PORT_DIPSETTING( 0x090, "0x090" )
PORT_DIPSETTING( 0x0a0, "0x0a0" )
PORT_DIPSETTING( 0x0b0, "0x0b0" )
PORT_DIPSETTING( 0x0c0, "0x0c0" )
PORT_DIPSETTING( 0x0d0, "0x0d0" )
PORT_DIPSETTING( 0x0e0, "0x0e0" )
PORT_DIPSETTING( 0x0f0, "0x0f0" )
PORT_DIPSETTING( 0x100, "0x100" )
PORT_DIPSETTING( 0x110, "0x110" )
PORT_DIPSETTING( 0x120, "0x120" )
PORT_DIPSETTING( 0x130, "0x130" )
PORT_DIPSETTING( 0x140, "0x140" )
PORT_DIPSETTING( 0x150, "0x150" )
PORT_DIPSETTING( 0x160, "0x160" )
PORT_DIPSETTING( 0x170, "0x170" )
PORT_DIPSETTING( 0x180, "0x180" )
PORT_DIPSETTING( 0x190, "0x190" )
PORT_DIPSETTING( 0x1a0, "0x1a0" )
PORT_DIPSETTING( 0x1b0, "0x1b0" )
PORT_DIPSETTING( 0x1c0, "0x1c0" )
PORT_DIPSETTING( 0x1d0, "0x1d0" )
PORT_DIPSETTING( 0x1e0, "0x1e0" )
PORT_DIPSETTING( 0x1f0, "0x1f0" )
PORT_DIPSETTING( 0x200, "0x200" )
PORT_DIPSETTING( 0x210, "0x210" )
PORT_DIPSETTING( 0x220, "0x220" )
PORT_DIPSETTING( 0x230, "0x230" )
PORT_DIPSETTING( 0x240, "0x240" )
PORT_DIPSETTING( 0x250, "0x250" )
PORT_DIPSETTING( 0x260, "0x260" )
PORT_DIPSETTING( 0x270, "0x270" )
PORT_DIPSETTING( 0x280, "0x280" )
PORT_DIPSETTING( 0x290, "0x290" )
PORT_DIPSETTING( 0x2a0, "0x2a0" )
PORT_DIPSETTING( 0x2b0, "0x2b0" )
PORT_DIPSETTING( 0x2c0, "0x2c0" )
PORT_DIPSETTING( 0x2d0, "0x2d0" )
PORT_DIPSETTING( 0x2e0, "0x2e0" )
PORT_DIPSETTING( 0x2f0, "0x2f0" )
PORT_DIPSETTING( 0x300, "0x300" )
PORT_DIPSETTING( 0x310, "0x310" )
PORT_DIPSETTING( 0x320, "0x320" )
PORT_DIPSETTING( 0x330, "0x330" )
PORT_DIPSETTING( 0x340, "0x340" )
PORT_DIPSETTING( 0x350, "0x350" )
PORT_DIPSETTING( 0x360, "0x360" )
PORT_DIPSETTING( 0x370, "0x370" )
PORT_DIPSETTING( 0x380, "0x380" )
PORT_DIPSETTING( 0x390, "0x390" )
PORT_DIPSETTING( 0x3a0, "0x3a0" )
PORT_DIPSETTING( 0x3b0, "0x3b0" )
PORT_DIPSETTING( 0x3c0, "0x3c0" )
PORT_DIPSETTING( 0x3d0, "0x3d0" )
PORT_DIPSETTING( 0x3e0, "0x3e0" )
PORT_DIPSETTING( 0x3f0, "0x3f0" )
PORT_START("W1") // Jumper area, field 0=no jumper 1=LPT 2=COM 3=n/a
PORT_DIPNAME(0x01, 0x00, "ISA IRQ2")
PORT_DIPSETTING(0x00, "no jumper")
PORT_DIPSETTING(0x01, "8274 INT")
PORT_DIPNAME(0x02, 0x00, "ISA IRQ3")
PORT_DIPSETTING(0x00, "no jumper")
PORT_DIPSETTING(0x02, "8274 INT")
PORT_DIPNAME(0x04, 0x04, "ISA IRQ4")
PORT_DIPSETTING(0x00, "no jumper")
PORT_DIPSETTING(0x04, "8274 INT")
PORT_DIPNAME(0x08, 0x00, "ISA IRQ5")
PORT_DIPSETTING(0x00, "no jumper")
PORT_DIPSETTING(0x08, "8274 INT")
PORT_DIPNAME(0x10, 0x00, "ISA IRQ6")
PORT_DIPSETTING(0x00, "no jumper")
PORT_DIPSETTING(0x10, "8274 INT")
INPUT_PORTS_END
ioport_constructor isa8_eistwib_device::device_input_ports() const
{
return INPUT_PORTS_NAME( eistwib_ports );
}
//-------------------------------------------------
// Board configuration
//-------------------------------------------------
void isa8_eistwib_device::device_add_mconfig(machine_config &config)
{
I8274_NEW(config, m_uart8274, (XTAL(14'318'181)/ 3) / 2); // Half the 4,77 MHz ISA bus CLK signal
m_uart8274->out_int_callback().set([this] (int state)
{ // Jumper field W1 decides what IRQs to pull
if (m_isairq->read() & 0x01) { LOGIRQ("TWIB IRQ2: %d\n", state); m_isa->irq2_w(state); }
if (m_isairq->read() & 0x02) { LOGIRQ("TWIB IRQ3: %d\n", state); m_isa->irq3_w(state); }
if (m_isairq->read() & 0x04) { LOGIRQ("TWIB IRQ4: %d\n", state); m_isa->irq4_w(state); }
if (m_isairq->read() & 0x08) { LOGIRQ("TWIB IRQ5: %d\n", state); m_isa->irq5_w(state); }
if (m_isairq->read() & 0x10) { LOGIRQ("TWIB IRQ6: %d\n", state); m_isa->irq6_w(state); }
});
}
isa8_eistwib_device::isa8_eistwib_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, ISA8_EIS_TWIB, tag, owner, clock)
, device_isa8_card_interface(mconfig, *this)
, m_uart8274(*this, "terminal")
, m_sw1(*this, "SW1")
, m_isairq(*this, "W1")
, m_installed(false)
{
}
//-------------------------------------------------
// Overloading methods
//-------------------------------------------------
void isa8_eistwib_device::device_start()
{
set_isa_device();
m_installed = false;
}
void isa8_eistwib_device::device_reset()
{
int base = m_sw1->read();
if (!m_installed)
{
LOG("Installing twib device at %04x\n", base);
m_isa->install_device(
base, base + 0x0f,
read8_delegate(FUNC( isa8_eistwib_device::twib_r ), this),
write8_delegate(FUNC( isa8_eistwib_device::twib_w ), this));
m_installed = true;
}
}

43
src/devices/bus/isa/eis_twib.h Normal file
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@ -0,0 +1,43 @@
// license:BSD-3-Clause
// copyright-holders: Joakim Larsson Edstrom
#ifndef MAME_BUS_ISA_EIS_TWIB_H
#define MAME_BUS_ISA_EIS_TWIB_H
#pragma once
#include "isa.h"
#include "machine/z80sio.h"
class isa8_eistwib_device :
public device_t,
public device_isa8_card_interface
{
public:
// construction/destruction
isa8_eistwib_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_READ8_MEMBER(twib_r);
DECLARE_WRITE8_MEMBER(twib_w);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// devices
required_device<i8274_new_device> m_uart8274;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override;
virtual ioport_constructor device_input_ports() const override;
// helpers
required_ioport m_sw1;
required_ioport m_isairq;
bool m_installed;
};
// device type definition
DECLARE_DEVICE_TYPE(ISA8_EIS_TWIB, isa8_eistwib_device)
#endif // MAME_BUS_ISA_EIS_TWIB_H

3
src/devices/bus/isa/isa_cards.cpp
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@ -66,6 +66,7 @@
#include "ne2000.h"
#include "3c505.h"
#include "eis_sad8852.h"
#include "eis_twib.h"
#include "np600.h"
// communication ports
@ -129,6 +130,7 @@ void pc_isa8_cards(device_slot_interface &device)
device.option_add("chessmsr", ISA8_CHESSMSR);
device.option_add("finalchs", ISA8_FINALCHS);
device.option_add("epc_mda", ISA8_EPC_MDA);
device.option_add("epc_twib", ISA8_EIS_TWIB);
}
void pc_isa16_cards(device_slot_interface &device)
@ -171,6 +173,7 @@ void pc_isa16_cards(device_slot_interface &device)
device.option_add("chessmsr", ISA8_CHESSMSR);
device.option_add("finalchs", ISA8_FINALCHS);
device.option_add("epc_mda", ISA8_EPC_MDA);
device.option_add("epc_twib", ISA8_EIS_TWIB);
// 16-bit
device.option_add("ide", ISA16_IDE);
device.option_add("ne2000", NE2000);

2
src/mame/drivers/eispc.cpp
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@ -59,6 +59,7 @@
//#include "bus/isa/isa_cards.h"
#include "bus/isa/ega.h"
#include "bus/isa/mda.h"
#include "bus/isa/eis_twib.h"
#include "machine/pc_lpt.h"
#include "machine/ram.h"
@ -698,6 +699,7 @@ static void epc_isa8_cards(device_slot_interface &device)
{
device.option_add("epc_mda", ISA8_EPC_MDA);
device.option_add("ega", ISA8_EGA);
device.option_add("epc_twib", ISA8_EIS_TWIB);
// device.option_add("epc_hdc1065", ISA8_EPC_HDC1065);
// device.option_add("epc_mb1080", ISA8_EPC_MB1080);
}