diff options
author | AJR <ajrhacker@users.noreply.github.com> | 2017-12-01 21:40:42 -0500 |
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committer | AJR <ajrhacker@users.noreply.github.com> | 2017-12-01 21:42:31 -0500 |
commit | cf79c7b3f6daa2ecb1adb5a559a33b724c094bc8 (patch) | |
tree | c137c9ddf0168674cde57a81d515e87850c87be1 /src/mame/drivers/milwaukee.cpp | |
parent | e1771185d2a8766f95733554c643d0fcad268745 (diff) |
milwaukee.cpp: Add XTAL and PIT clocks from barely legible schematics (nw)
Diffstat (limited to 'src/mame/drivers/milwaukee.cpp')
-rw-r--r-- | src/mame/drivers/milwaukee.cpp | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/mame/drivers/milwaukee.cpp b/src/mame/drivers/milwaukee.cpp index 8e29012b07f..097130f15d0 100644 --- a/src/mame/drivers/milwaukee.cpp +++ b/src/mame/drivers/milwaukee.cpp @@ -7,7 +7,7 @@ Milwaukee Computer MC-1000 series (MC-1000/1100/1200/1300/1400) all the same except for disk options. Chips: SY6502, 2x 6821, 2x MC6850P, 6852, INS8253 -Other: 2x 7-position rotary "dips" to select baud rates on each 6850. +Other: 2x 7-position rotary "dips" to select baud rates on each 6850 (19.2K, 9600, 4800, 2400, 1200, 600, 300). ************************************************************************************************************************************/ @@ -50,16 +50,21 @@ static INPUT_PORTS_START( milwaukee ) INPUT_PORTS_END static MACHINE_CONFIG_START( milwaukee ) - MCFG_CPU_ADD("maincpu", M6502, 1'000'000) // can't read crystal, but clock is correct + MCFG_CPU_ADD("maincpu", M6502, XTAL_16MHz / 16) MCFG_CPU_PROGRAM_MAP(mem_map) MCFG_DEVICE_ADD("pit", PIT8253, 0) + MCFG_PIT8253_CLK0(XTAL_16MHz / 16 / 4) // 250 Hz + MCFG_PIT8253_OUT0_HANDLER(DEVWRITELINE("pit", pit8253_device, write_gate0)) MCFG_DEVCB_INVERT + MCFG_PIT8253_CLK1(double(XTAL_16MHz) / 2 / 13 / 2048 / 5) // 60.09 Hz? + MCFG_PIT8253_OUT1_HANDLER(DEVWRITELINE("pit", pit8253_device, write_clk2)) MCFG_DEVCB_INVERT + MCFG_DEVICE_ADD("pia1", PIA6821, 0) MCFG_DEVICE_ADD("pia2", PIA6821, 0) MCFG_DEVICE_ADD("acia2", ACIA6850, 0) MCFG_DEVICE_ADD("ssda", MC6852, 0) - MCFG_DEVICE_ADD("acia_clock", CLOCK, 153600) + MCFG_DEVICE_ADD("acia_clock", CLOCK, XTAL_16MHz / 2 / 13 / 4) MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("acia1", acia6850_device, write_txc)) MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("acia1", acia6850_device, write_rxc)) |