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hp9k_3xx.cpp: more plausible GPIB mapping - not throoughly tested, @sschelle might want to look at this (nw)

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This commit is contained in:
Vas Crabb 2018-05-31 10:51:18 +10:00
parent 1473bbb4e5
commit d8a1e0da88
1 changed files with 4 additions and 8 deletions
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12
src/mame/drivers/hp9k_3xx.cpp
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@ -202,7 +202,7 @@ void hp9k3xx_state::hp9k3xx_common(address_map &map)
map(0x00000000, 0x0001ffff).rom().region("maincpu", 0).w(this, FUNC(hp9k3xx_state::led_w)); // writes to 1fffc are the LED
map(0x00428000, 0x00428003).rw(m_iocpu, FUNC(upi41_cpu_device::upi41_master_r), FUNC(upi41_cpu_device::upi41_master_w)).umask32(0x00ff00ff);
map(0x00470000, 0x0047ffff).rw(this, FUNC(hp9k3xx_state::gpib_r), FUNC(hp9k3xx_state::gpib_w)).umask16(0x00ff);
map(0x00470000, 0x0047000f).mirror(0x0000fff0).rw(this, FUNC(hp9k3xx_state::gpib_r), FUNC(hp9k3xx_state::gpib_w)).umask16(0x00ff);
map(0x005f8000, 0x005f800f).rw(PTM6840_TAG, FUNC(ptm6840_device::read), FUNC(ptm6840_device::write)).umask32(0x00ff00ff);
@ -216,7 +216,7 @@ void hp9k3xx_state::hp9k310_map(address_map &map)
map(0x000000, 0x01ffff).rom().region("maincpu", 0).nopw(); // writes to 1fffc are the LED
map(0x428000, 0x428003).rw(m_iocpu, FUNC(upi41_cpu_device::upi41_master_r), FUNC(upi41_cpu_device::upi41_master_w)).umask16(0x00ff);
map(0x470000, 0x47800f).rw(this, FUNC(hp9k3xx_state::gpib_r), FUNC(hp9k3xx_state::gpib_w)).umask16(0x00ff);
map(0x470000, 0x47000f).mirror(0x00fff0).rw(this, FUNC(hp9k3xx_state::gpib_r), FUNC(hp9k3xx_state::gpib_w)).umask16(0x00ff);
map(0x510000, 0x510003).rw(this, FUNC(hp9k3xx_state::buserror16_r), FUNC(hp9k3xx_state::buserror16_w)); // no "Alpha display"
map(0x538000, 0x538003).rw(this, FUNC(hp9k3xx_state::buserror16_r), FUNC(hp9k3xx_state::buserror16_w)); // no "Graphics"
@ -319,9 +319,7 @@ WRITE_LINE_MEMBER(hp9k3xx_state::gpib_irq)
WRITE8_MEMBER(hp9k3xx_state::gpib_w)
{
offset &= 0xf;
if (offset >= 0x08) {
if (offset & 0x08) {
m_tms9914->reg8_w(space, offset & 0x07, data);
return;
}
@ -332,9 +330,7 @@ READ8_MEMBER(hp9k3xx_state::gpib_r)
{
uint8_t data = 0xff;
offset &= 0xf;
if (offset >= 0x8) {
if (offset & 0x8) {
data = m_tms9914->reg8_r(space, offset & 0x07);
return data;
}