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minor bugfix and cleanup (#4456)

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Fixes leader lamp
This commit is contained in:
Risugami 2019-01-02 06:23:10 -06:00 committed by Vas Crabb
parent 0482cd1fab
commit 4568eab1d3
1 changed files with 4 additions and 5 deletions
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9
src/mame/drivers/vegas.cpp
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@ -1101,15 +1101,14 @@ CUSTOM_INPUT_MEMBER(vegas_state::i40_r)
*************************************/ *************************************/
WRITE32_MEMBER(vegas_state::wheel_board_w) WRITE32_MEMBER(vegas_state::wheel_board_w)
{ {
/* two writes in pairs. bit 11 high, bit 10 flag, flag off first, on second. arg remains the same. */ bool chip_select = BIT(data, 11);
bool valid = (data & (1 << 11)); bool latch_clk = BIT(data, 10);
bool flag = (data & (1 << 10));
uint8_t op = (data >> 8) & 0x3; uint8_t op = (data >> 8) & 0x3;
uint8_t arg = data & 0xff; uint8_t arg = data & 0xff;
//logerror("wheel_board_w: data = %08x op: %02x arg: %02x\n", data, op, arg); //logerror("wheel_board_w: data = %08x op: %02x arg: %02x\n", data, op, arg);
if (valid && flag) if (chip_select && latch_clk)
{ {
switch (op) switch (op)
{ {
@ -1123,7 +1122,7 @@ WRITE32_MEMBER(vegas_state::wheel_board_w)
m_lamps[bit] = BIT(arg, bit); m_lamps[bit] = BIT(arg, bit);
/* leader lamp bit is included in every write, for some reason. */ /* leader lamp bit is included in every write, for some reason. */
m_lamps[8] = BIT(arg, 12); m_lamps[8] = BIT(data, 12);
break; break;
case 0x2: case 0x2: