Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-23 17:00:53 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

casio/pv1000.cpp: Acrually return two bits of joystick input rather than giving spurious interrupt flags.

Browse Source
This commit is contained in:
Vas Crabb 2024-08-24 03:59:52 +10:00
parent 35f1ec96be
commit fa52f9a8ff
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/mame/casio/pv1000.cpp
View File

@ -317,8 +317,10 @@ uint8_t pv1000_state::io_r(offs_t offset)
{
case 4: // port $FC returns player 2 joystick and interrupt status
return 0x80
| (BIT(m_io_regs[5], 3) ? m_joysticks[3]->read() : 0)
| (BIT(m_io_regs[5], 2) ? m_joysticks[2]->read() : 0)
| (((BIT(m_io_regs[5], 3) ? m_joysticks[3]->read() : 0)
| (BIT(m_io_regs[5], 2) ? m_joysticks[2]->read() : 0)
| (BIT(m_io_regs[5], 1) ? m_joysticks[1]->read() : 0)
| (BIT(m_io_regs[5], 0) ? m_joysticks[0]->read() : 0)) & 0x0c)
| (m_irq_active & 3); // Bit 1 = Matrix IRQ, Bit 0 = Prerender IRQ
case 5: // port $FD returns both joysticks and acknowledges matrix scan IRQ