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apple2gs: correct scanline interrupt position relative to the screen. [R. Belmont, Peter Ferrie]

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This commit is contained in:
arbee 2023-02-25 22:53:20 -05:00
parent 332a3b2145
commit 58f8d6808f
1 changed files with 2 additions and 2 deletions
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4
src/mame/apple/apple2gs.cpp
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@ -1002,10 +1002,10 @@ TIMER_DEVICE_CALLBACK_MEMBER(apple2gs_state::apple2_interrupt)
m_screen->update_partial(scanline);
/* check scanline interrupt bits if we're in super hi-res and the current scanline is within the active display area */
if ((m_video->get_newvideo() & 0x80) && (scanline >= (BORDER_TOP-1)) && (scanline < (200+BORDER_TOP-1)))
if ((m_video->get_newvideo() & 0x80) && (scanline >= BORDER_TOP) && (scanline < (200+BORDER_TOP)))
{
u8 scb;
const int shrline = scanline - BORDER_TOP + 1;
const int shrline = scanline - BORDER_TOP;
if (shrline & 1)
{