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mn1400: add pinout reference

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This commit is contained in:
hap 2023-05-06 23:53:50 +02:00
parent 0d002a80b5
commit 4e1d6d8547
4 changed files with 46 additions and 5 deletions
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3
src/devices/cpu/mn1400/mn1400.cpp
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@ -47,7 +47,8 @@ std::unique_ptr<util::disasm_interface> mn1400_cpu_device::create_disassembler()
bool mn1400_cpu_device::op_has_param(u8 op)
{
return false;
// branch opcodes are 2 bytes
return ((op & 0xf8) == 0x38 || (op & 0xf0) == 0x40 || (op & 0xf0) == 0xe0);
}
void mn1400_cpu_device::execute_one()

21
src/devices/cpu/mn1400/mn1400.h
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@ -16,6 +16,27 @@
// pinout reference
/*
____ ____ ____ ____
Vss 1 | \_/ | 40 OSC Vss 1 | \_/ | 28 OSC
CO11 2 | | 39 Vdd CO9 2 | | 27 Vdd
CO10 3 | | 38 DO7 CO8 3 | | 26 SNS1
CO9 4 | | 37 DO6 CO7 4 | | 25 SNS0
CO8 5 | | 36 DO5 CO6 5 | | 24 DO0
CO7 6 | | 35 DO4 CO5 6 | MN1400 | 23 DO1
CO6 7 | | 34 DO3 AI3 7 | MN1402 | 22 DO2
CO5 8 | MN1400 | 33 DO2 AI2 8 | MN1432 | 21 DO3
CO4 9 | MN1405 | 32 DO1 AI1 9 | | 20 TST
CO3 10 | MN1430 | 31 DO0 AI0 10 | | 19 RST
CO2 11 | MN1435 | 30 SNS1 BI3 11 | | 18 EO3
CO1 12 | MN1450 | 29 SNS0 BI2 12 | | 17 EO2
CO0 13 | MN1455 | 28 CSLCT BI1 13 | | 16 EO1
AI3 14 | | 27 RST BI0 14 |___________| 15 EO0
AI2 15 | | 26 TST
AI1 16 | | 25 EO3
AI0 17 | | 24 EO2
BI3 18 | | 23 EO1
BI2 19 | | 22 EO0
BI1 20 |___________| 21 BI0
*/

20
src/devices/cpu/mn1400/mn1400base.cpp
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@ -4,7 +4,25 @@
Matsushita (Panasonic) MN1400 family MCU cores
x
4-bit microcontroller introduced in 1977, possibly Matsushita's first MCU.
Basic models:
MN1400: 1KB ROM, 64 nibbles RAM
MN1402: 768 bytes ROM, 32 nibbles RAM
MN1403: 0.5KB ROM, 16 nibbles RAM, 18 pins
MN1404: 0.5KB ROM, 16 nibbles RAM, 16 pins
MN1405: 2KB ROM, 128 nibbles RAM
MN1420: MN1400 with LED driver
MN1421: 28-pin version of MN1420
MN1425: MN1405 with LED driver
MN1430: high-voltage version of MN1400
MN1435: high-voltage version of MN1405
MN1450/MN1460: CMOS version of MN1400
MN1455/MN1465: CMOS version of MN1405
*/

7
src/mame/handheld/hh_mn1400.cpp
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@ -109,7 +109,8 @@ u8 hh_mn1400_state::read_inputs(int columns)
/*******************************************************************************
Lakeside Computer Perfection
* MN1400ML MCU (die label: 1400 ML-0)
* PCB label: Lakeside, PANASONIC, TCI-A4H94HB
* MN1400ML MCU (28 pins, die label: 1400 ML-0)
* 10 LEDs, 2-bit sound
*******************************************************************************/
@ -138,7 +139,7 @@ INPUT_PORTS_END
void compperf_state::compperf(machine_config &config)
{
// basic machine hardware
MN1400(config, m_maincpu, 300000);
MN1400(config, m_maincpu, 300000); // approximation - RC osc. R=18K, C=100pF
// video hardware
PWM_DISPLAY(config, m_display).set_size(1, 10);
@ -195,7 +196,7 @@ INPUT_PORTS_END
void scrablexa_state::scrablexa(machine_config &config)
{
// basic machine hardware
MN1405(config, m_maincpu, 300000);
MN1405(config, m_maincpu, 300000); // approximation - RC osc. R=15K, C=100pF
// video hardware
PWM_DISPLAY(config, m_display).set_size(1, 1);