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Allow switching between upper case/lower case character rom with shift+commodore key [smf]

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This commit is contained in:
smf- 2017-11-16 18:14:04 +00:00
parent cce3d1534b
commit f88f47bf0c
1 changed files with 11 additions and 1 deletions
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12
src/mame/drivers/c65.cpp
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@ -96,6 +96,7 @@ private:
uint8_t m_VIC2_IRQPend, m_VIC2_IRQMask;
/* 0x20: border color (TODO: different thread?) */
uint8_t m_VIC2_EXTColor;
uint8_t m_VIC2_VS_CB_Base;
uint8_t m_VIC2_BK0_Color;
/* 0x30: banking + PAL + EXT SYNC */
uint8_t m_VIC3_ControlA;
@ -128,6 +129,8 @@ uint32_t c65_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap,
int pixel_width = (m_VIC3_ControlB & 0x80) ? 1 : 2;
int columns = 80 / pixel_width;
uint8_t *cptr = &m_iplrom[((m_VIC3_ControlA & 0x40) ? 0x9000: 0xd000) + ((m_VIC2_VS_CB_Base & 0x2) << 10)];
// TODO: border area
for(int y=cliprect.min_y;y<=cliprect.max_y;y++)
{
@ -144,7 +147,7 @@ uint32_t c65_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap,
int background_color = m_VIC2_BK0_Color & 0xf;
int highlight_color = 0;
int enable_dot = ((m_iplrom[(tile<<3)+ym+0xd000] >> xm) & 1);
int enable_dot = ((cptr[(tile<<3)+ym] >> xm) & 1);
if (attr & 0x10)
{
@ -185,6 +188,10 @@ READ8_MEMBER(c65_state::vic4567_dummy_r)
return res;
case 0x15:
return 0xff; // silence log for now
case 0x18:
return m_VIC2_VS_CB_Base;
case 0x19:
return m_VIC2_IRQPend;
@ -212,6 +219,9 @@ WRITE8_MEMBER(c65_state::vic4567_dummy_w)
{
switch(offset)
{
case 0x18:
m_VIC2_VS_CB_Base = data;
break;
case 0x19:
m_VIC2_IRQPend &= ~data;
IRQCheck(0);