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amstarz80.cpp: Add a few preliminary mappings

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AJR 2022-08-18 19:47:58 -04:00
parent be75b304d5
commit e5a902f4b4
1 changed files with 14 additions and 0 deletions
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14
src/mame/misc/amstarz80.cpp
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@ -89,10 +89,24 @@ uint32_t amstarz80_state::screen_update(screen_device &screen, bitmap_ind16 &bit
void amstarz80_state::prg_map(address_map &map)
{
map(0x0000, 0x17ff).rom();
map(0x1c00, 0x1cff).ram();
map(0x2000, 0x21ff).ram();
map(0x2400, 0x25ff).ram();
map(0x2800, 0x29ff).ram();
map(0x4000, 0x4000).portr("IN0");
map(0x4001, 0x4001).portr("IN1");
}
static INPUT_PORTS_START( holddraw )
PORT_START("IN0")
PORT_BIT(0x75, IP_ACTIVE_LOW, IPT_UNKNOWN)
PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN)
PORT_BIT(0x0a, IP_ACTIVE_HIGH, IPT_UNKNOWN)
PORT_START("IN1")
PORT_BIT(0xff, IP_ACTIVE_LOW, IPT_UNKNOWN)
// 2x 8 dip banks
// 1x 4 dip bank
INPUT_PORTS_END