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(nw) segabill.cpp: 8MHz rated Z80, so change clock. Also document OSC + whitespace

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braintro 2019-09-21 15:55:05 -05:00
parent 8734df72ea
commit 7e94f7cfa0
1 changed files with 16 additions and 16 deletions
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32
src/mame/machine/segabill.cpp
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@ -24,26 +24,26 @@ Sega VERSUS CITY BILLBOARD CONTROL BD 837-11854 (C) 1991
|-- 74F74N M74LS393P HD74HC4040P 315-5338A |
| |
| z -- |
| 8 M27C512 C|| |
| 8 M27C512 32.000MHz C|| |
| 0 LH5268AD N|| |
| 2|| |
| GAL16V8B SN74LS32N SN74LS04N MB3771 -- |
| LED |
|-----------------------------------------------------------------------------|
Setup:
Z80 ZILOG Z0840008PSC Z80 CPU (DIP40)
LH5268A SHARP LH5268AD-10LL 8k x8 SRAM (DIP28, labeled as MB8464A-15LL on PCB silkscreen)
PS2501 NEC PS2501-4 ISOLATOR (DIP16)
M54583P MITSUBISHI M54583P DARLINGTON TRANSISTOR ARRAY (DIP18)
74F74N PHILLIPS 74F74N DUAL D-TYPE FLIP-FLIP (DIP14)
M74LS393P MITSUBISHI M74LS393P DUAL BINARY COUNTER (DIP14)
HD74HC4040P RENESAS HD74HC4040P 12-STAGE BINARY COUNTER (DIP16)
315-5338A SEGA CUSTOM (QFP100)
M27C512 ST MICROELECTRONICS M27C512-15F1 (DIP28, labeled 'EPR-18022', socketed)
GAL16V8B LATTICE GAL16V8B-25LP HIGH PERFORMANCE E2CMOS PLD GENERIC ARRAY LOGIC (DIP28, socketed)
SN74LS32N MOTOROLA SN74LS32N QUAD 2-INPUT OR GATE (DIP14)
SN74LS04N MOTOROLA SN74LS04N HEX INVERTER (DIP14)
MB3771 FUJITSU MB3771 POWER SUPPLY VOLTAGE MONITOR (SOP8)
Setup:
Z80 ZILOG Z0840008PSC Z80 CPU (DIP40)
LH5268A SHARP LH5268AD-10LL 8k x8 SRAM (DIP28, labeled as MB8464A-15LL on PCB silkscreen)
PS2501 NEC PS2501-4 ISOLATOR (DIP16)
M54583P MITSUBISHI M54583P DARLINGTON TRANSISTOR ARRAY (DIP18)
74F74N PHILLIPS 74F74N DUAL D-TYPE FLIP-FLIP (DIP14)
M74LS393P MITSUBISHI M74LS393P DUAL BINARY COUNTER (DIP14)
HD74HC4040P RENESAS HD74HC4040P 12-STAGE BINARY COUNTER (DIP16)
315-5338A SEGA CUSTOM (QFP100)
M27C512 ST MICROELECTRONICS M27C512-15F1 (DIP28, labeled 'EPR-18022', socketed)
GAL16V8B LATTICE GAL16V8B-25LP HIGH PERFORMANCE E2CMOS PLD GENERIC ARRAY LOGIC (DIP28, socketed)
SN74LS32N MOTOROLA SN74LS32N QUAD 2-INPUT OR GATE (DIP14)
SN74LS04N MOTOROLA SN74LS04N HEX INVERTER (DIP14)
MB3771 FUJITSU MB3771 POWER SUPPLY VOLTAGE MONITOR (SOP8)
Board:
837-11854 Sega VERSUS CITY BILLBOARD CONTROL BD
EEPROM:
@ -148,7 +148,7 @@ const tiny_rom_entry *sega_billboard_device::device_rom_region() const
void sega_billboard_device::device_add_mconfig(machine_config &config)
{
Z80(config, m_billcpu, 32_MHz_XTAL / 8); // divisor guessed
Z80(config, m_billcpu, 32_MHz_XTAL / 4); // Z0840008PSC 8MHz rated part - not verified
m_billcpu->set_addrmap(AS_PROGRAM, &sega_billboard_device::mem_map);
m_billcpu->set_addrmap(AS_IO, &sega_billboard_device::io_map);
m_billcpu->set_periodic_int(FUNC(sega_billboard_device::irq0_line_hold), attotime::from_hz(32_MHz_XTAL/65536)); // timing?