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author Dirk Best <mail@dirk-best.de>2015-07-30 10:29:41 +0200
committer Dirk Best <mail@dirk-best.de>2015-07-30 10:31:00 +0200
commit93bd0f0daf4bce350dc66071799edb38812a8d2f (patch)
treecdac6386e04993ecfa419c3a03de60d33e4f36d8 /src/mess/drivers/pmd85.c
parent0c30315e46c2fac91dd65e7baabae21d2084e6ec (diff)
pmd85: use standard palette, clean up video emulation
Diffstat (limited to 'src/mess/drivers/pmd85.c')
-rw-r--r--src/mess/drivers/pmd85.c33
1 files changed, 31 insertions, 2 deletions
diff --git a/src/mess/drivers/pmd85.c b/src/mess/drivers/pmd85.c
index 737c7e63a4f..ce1189c9592 100644
--- a/src/mess/drivers/pmd85.c
+++ b/src/mess/drivers/pmd85.c
@@ -182,6 +182,36 @@ I/O ports
#include "formats/pmd_cas.h"
#include "machine/ram.h"
+
+//**************************************************************************
+// VIDEO EMULATION
+//**************************************************************************
+
+UINT32 pmd85_state::screen_update_pmd85(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ for (int y = 0; y < 256; y++)
+ {
+ // address of current line in PMD-85 video memory
+ UINT8 *line = m_ram->pointer() + 0xc000 + 0x40 * y;
+
+ for (int x = 0; x < 288/6; x++)
+ {
+ int pen = BIT(line[x], 7) ? 1 : 2;
+
+ bitmap.pix16(y, x * 6 + 0) = BIT(line[x], 0) ? pen : 0;
+ bitmap.pix16(y, x * 6 + 1) = BIT(line[x], 1) ? pen : 0;
+ bitmap.pix16(y, x * 6 + 2) = BIT(line[x], 2) ? pen : 0;
+ bitmap.pix16(y, x * 6 + 3) = BIT(line[x], 3) ? pen : 0;
+ bitmap.pix16(y, x * 6 + 4) = BIT(line[x], 4) ? pen : 0;
+ bitmap.pix16(y, x * 6 + 5) = BIT(line[x], 5) ? pen : 0;
+ }
+
+ }
+
+ return 0;
+}
+
+
/* I/O ports */
static ADDRESS_MAP_START( pmd85_io_map, AS_IO, 8, pmd85_state )
@@ -578,8 +608,7 @@ static MACHINE_CONFIG_START( pmd85, pmd85_state )
MCFG_SCREEN_UPDATE_DRIVER(pmd85_state, screen_update_pmd85)
MCFG_SCREEN_PALETTE("palette")
- MCFG_PALETTE_ADD("palette", sizeof (pmd85_palette) / 3)
- MCFG_PALETTE_INIT_OWNER(pmd85_state, pmd85)
+ MCFG_PALETTE_ADD_MONOCHROME_GREEN_HIGHLIGHT("palette")
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")