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cx85: Invert polarity of B pot output

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This commit is contained in:
AJR 2024-03-06 00:00:49 -05:00
parent 38b78c0b1c
commit c8cfe8eec5
1 changed files with 4 additions and 1 deletions
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5
src/devices/bus/vcs_ctrl/cx85.cpp
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@ -4,6 +4,8 @@
Atari CX85 Numeric Keypad
Normal Atari 400/800 usage has this connect to controller port 2.
**********************************************************************/
#include "emu.h"
@ -119,5 +121,6 @@ u8 atari_cx85_device::vcs_joy_r()
u8 atari_cx85_device::vcs_pot_x_r()
{
return BIT(m_encoder->read(), 4) ? 0 : 0xff;
// Schematics suggests this should also be inverted through 4049B, but drivers seem to work the opposite way
return BIT(m_encoder->read(), 4) ? 0xff : 0;
}