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samcoupe: Fix mode1/2 regression, add savestates

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This commit is contained in:
Dirk Best 2020-07-20 19:18:34 +02:00
parent e3a02276d0
commit de0cb674fa
1 changed files with 23 additions and 3 deletions
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26
src/mame/drivers/samcoupe.cpp
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@ -122,6 +122,8 @@ private:
INT_MIDIOUT = 0x10
};
void postload();
// video
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
@ -425,8 +427,8 @@ void samcoupe_state::draw_mode3_line(int y, int hpos)
void samcoupe_state::draw_mode12_block(bitmap_ind16 &bitmap, int vpos, int hpos, uint8_t mask)
{
/* extract colors from attribute */
uint8_t ink = m_clut[(m_attribute >> 3) & 0x0f];
uint8_t pap = m_clut[((m_attribute >> 3) & 0x08) | (m_attribute & 0x07)];
uint8_t ink = m_clut[((m_attribute >> 3) & 0x08) | (m_attribute & 0x07)];
uint8_t pap = m_clut[(m_attribute >> 3) & 0x0f];
/* draw block of 8 pixels (doubled to 16) */
for (int i = 0; i < SAM_BLOCK; i++)
@ -549,6 +551,12 @@ INTERRUPT_GEN_MEMBER(samcoupe_state::samcoupe_frame_interrupt)
samcoupe_irq(INT_FRAME);
}
void samcoupe_state::postload()
{
// restore videoram pointer
vmpr_w(m_vmpr);
}
void samcoupe_state::machine_start()
{
// make sure the ram device is already running
@ -560,6 +568,18 @@ void samcoupe_state::machine_start()
/* schedule our video updates */
m_video_update_timer = timer_alloc(TIMER_VIDEO_UPDATE);
m_video_update_timer->adjust(m_screen->time_until_pos(0, 0));
// register for save states
save_item(NAME(m_lmpr));
save_item(NAME(m_hmpr));
save_item(NAME(m_vmpr));
save_item(NAME(m_border));
save_item(NAME(m_clut), 16);
save_item(NAME(m_line_int));
save_item(NAME(m_status));
save_item(NAME(m_attribute));
machine().save().register_postload(save_prepost_delegate(FUNC(samcoupe_state::postload), this));
}
void samcoupe_state::machine_reset()
@ -981,4 +1001,4 @@ ROM_END
***************************************************************************/
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1989, samcoupe, 0, 0, samcoupe, samcoupe, samcoupe_state, empty_init, "Miles Gordon Technology plc", "SAM Coupe", 0 )
COMP( 1989, samcoupe, 0, 0, samcoupe, samcoupe, samcoupe_state, empty_init, "Miles Gordon Technology plc", "SAM Coupe", MACHINE_SUPPORTS_SAVE )