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macprtb.cpp: Initialize one more variable; update VIA type and notes

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This commit is contained in:
AJR 2021-02-19 11:35:54 -05:00
parent 03b9c51a75
commit 249d4f599f
1 changed files with 4 additions and 3 deletions
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7
src/mame/drivers/macprtb.cpp
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@ -18,8 +18,8 @@
These are sort of an intermediate step between the SE and Mac II in terms
of functional layout: ASC and SWIM are present, but there's only 1 VIA
and an M50753 microcontroller "PMU" handles power management, ADB, and
clock/PRAM.
(CMDμ G65SC22PE-2, not the "6523" variant normally used in ADB Macs) and an
M50753 microcontroller "PMU" handles power management, ADB, and clock/PRAM.
VIA connections:
Port A: 8-bit bidirectional data bus to the PMU
@ -282,6 +282,7 @@ void macportable_state::machine_start()
m_irq_count = m_ca1_data = m_ca2_data = 0;
m_pmu_via_bus = 0;
m_pmu_ack = m_pmu_req = 0;
m_adb_line = 1;
m_6015_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(macportable_state::mac_6015_tick),this));
m_6015_timer->adjust(attotime::never);
@ -550,7 +551,7 @@ void macportable_state::macprtb(machine_config &config)
SCC85C30(config, m_scc, C7M);
// m_scc->intrq_callback().set(FUNC(macportable_state::set_scc_interrupt));
R65NC22(config, m_via1, C7M/10);
R65C22(config, m_via1, C7M/10);
m_via1->readpa_handler().set(FUNC(macportable_state::mac_via_in_a));
m_via1->readpb_handler().set(FUNC(macportable_state::mac_via_in_b));
m_via1->writepa_handler().set(FUNC(macportable_state::mac_via_out_a));