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(MESS) phc25 : fixed graphic modes

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This commit is contained in:
Robbbert 2014-02-06 10:58:20 +00:00
parent 299a6559b0
commit 35cd6fd3d3
1 changed files with 13 additions and 30 deletions
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43
src/mess/drivers/phc25.c
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@ -1,14 +1,9 @@
// license:BSD-3-Clause // license:BSD-3-Clause
// copyright-holders:Curt Coder // copyright-holders:Curt Coder, Robbbert
/*************************************************************************** /***************************************************************************
Sanyo PHC-25 Sanyo PHC-25
Skeleton driver.
****************************************************************************
http://www.geocities.jp/sanyo_phc_25/ http://www.geocities.jp/sanyo_phc_25/
@ -26,10 +21,7 @@
TODO: TODO:
- MC6847 mode selection lines - sound isn't working
- accurate video timing
- sound isn't working (should be a keyclick)
- screen attribute bit 7 is unknown - screen attribute bit 7 is unknown
@ -42,7 +34,7 @@ RUN
10 SCREEN2,1,1:CLS:FORX=0TO8:LINE(X*24,0)-(X*24+16,191),X,BF:NEXT 10 SCREEN2,1,1:CLS:FORX=0TO8:LINE(X*24,0)-(X*24+16,191),X,BF:NEXT
RUN RUN
*/ *****************************************************************************/
#include "includes/phc25.h" #include "includes/phc25.h"
@ -90,11 +82,11 @@ WRITE8_MEMBER( phc25_state::port40_w )
0 cassette output 0 cassette output
1 cassette motor 1 cassette motor
2 LED in the LOCK button (on = uppercase) 2 LED in the LOCK button (on = capslock)
3 centronics strobe 3 centronics strobe
4 4
5 MC6847 GM1 5 MC6847 GM0
6 MC6847 GM0 6 MC6847 CSS
7 MC6847 A/G 7 MC6847 A/G
*/ */
@ -109,9 +101,7 @@ WRITE8_MEMBER( phc25_state::port40_w )
m_centronics->strobe_w(BIT(data, 3)); m_centronics->strobe_w(BIT(data, 3));
/* MC6847 */ /* MC6847 */
m_vdg->intext_w(1);
m_vdg->gm0_w(BIT(data, 5)); m_vdg->gm0_w(BIT(data, 5));
m_vdg->gm1_w(1);
m_vdg->css_w(BIT(data, 6)); m_vdg->css_w(BIT(data, 6));
m_vdg->ag_w(BIT(data, 7)); m_vdg->ag_w(BIT(data, 7));
m_port40 = data; m_port40 = data;
@ -268,14 +258,7 @@ READ8_MEMBER( phc25_state::video_ram_r )
{ {
if BIT(m_port40, 7) // graphics if BIT(m_port40, 7) // graphics
{ {
if BIT(m_port40, 5) return m_video_ram[offset];
{// screen 4
return m_video_ram[((offset & 0x1fe0)<<1) + (offset & 0x1f) + 0x800 ];
}
else
{// screen 3
return m_video_ram[((offset & 0x1fe0)<<2) + (offset & 0x1f) ];
}
} }
else // text else // text
{ {
@ -317,12 +300,12 @@ static const mc6847_interface ntsc_vdg_intf =
DEVCB_DRIVER_LINE_MEMBER(phc25_state, irq_w), /* field sync */ DEVCB_DRIVER_LINE_MEMBER(phc25_state, irq_w), /* field sync */
DEVCB_NULL, /* AG */ DEVCB_NULL, /* AG */
DEVCB_NULL, /* GM2 */ DEVCB_LINE_VCC, /* GM2 */
DEVCB_NULL, /* GM1 */ DEVCB_LINE_VCC, /* GM1 */
DEVCB_NULL, /* GM0 */ DEVCB_NULL, /* GM0 */
DEVCB_NULL, /* CSS */ DEVCB_NULL, /* CSS */
DEVCB_NULL, /* AS */ DEVCB_NULL, /* AS */
DEVCB_NULL, /* INTEXT */ DEVCB_LINE_VCC, /* INTEXT */
DEVCB_NULL, /* INV */ DEVCB_NULL, /* INV */
&phc25_state::ntsc_char_rom_r &phc25_state::ntsc_char_rom_r
@ -337,12 +320,12 @@ static const mc6847_interface pal_vdg_intf =
DEVCB_DRIVER_LINE_MEMBER(phc25_state, irq_w), /* field sync */ DEVCB_DRIVER_LINE_MEMBER(phc25_state, irq_w), /* field sync */
DEVCB_NULL, /* AG */ DEVCB_NULL, /* AG */
DEVCB_NULL, /* GM2 */ DEVCB_LINE_VCC, /* GM2 */
DEVCB_NULL, /* GM1 */ DEVCB_LINE_VCC, /* GM1 */
DEVCB_NULL, /* GM0 */ DEVCB_NULL, /* GM0 */
DEVCB_NULL, /* CSS */ DEVCB_NULL, /* CSS */
DEVCB_NULL, /* AS */ DEVCB_NULL, /* AS */
DEVCB_NULL, /* INTEXT */ DEVCB_LINE_VCC, /* INTEXT */
DEVCB_NULL, /* INV */ DEVCB_NULL, /* INV */
&phc25_state::pal_char_rom_r &phc25_state::pal_char_rom_r