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intchess: fix cassette data input

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This commit is contained in:
hap 2020-07-17 11:12:45 +02:00
parent a31bf42d43
commit 85eabc1952
1 changed files with 4 additions and 4 deletions
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8
src/mame/drivers/saitek_intchess.cpp
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@ -18,8 +18,7 @@ Hardware notes:
- 4-digit 7seg display
TODO:
- cassette data input doesn't work
- NMI is from the cassette deck, maybe for mixing microphone input?
- remove nmistate workaround when 6502 NMI is fixed
- colors are estimated from photos (black and white are obvious, but the green
and cyan are not standard 0x00ff00 / 0x00ffff)
- video timing is unknown, sprite offsets are estimated from photos
@ -205,10 +204,11 @@ u8 intchess_state::control_r()
TIMER_DEVICE_CALLBACK_MEMBER(intchess_state::cass_input)
{
// cassette input is tied to NMI
static bool nmistate = false;
bool state = m_cass->input() < -0.04;
bool state = ((m_cass->get_state() & CASSETTE_MASK_UISTATE) == CASSETTE_PLAY) && (m_cass->input() < -0.04);
if (state != nmistate || 1)
if (state != nmistate)
{
m_maincpu->set_input_line(INPUT_LINE_NMI, state ? ASSERT_LINE : CLEAR_LINE);
nmistate = state;