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(MESS) More hp16500b progress (nw)

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This commit is contained in:
arbee 2014-12-17 09:38:36 -05:00
parent 60bbddc468
commit 37d1ed1a22
1 changed files with 20 additions and 11 deletions
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31
src/mess/drivers/hp16500.c
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@ -16,7 +16,7 @@
IRQ 5 = 814a
IRQ 6 = 35c8 (jump 840120)
IRQ 7 = 35d4 (jump 840120)
****************************************************************************/
#include "emu.h"
@ -44,6 +44,8 @@ public:
DECLARE_READ8_MEMBER (vram_r);
DECLARE_WRITE8_MEMBER (mask_w);
DECLARE_WRITE8_MEMBER (val_w);
DECLARE_READ32_MEMBER(vbl_state_r);
DECLARE_WRITE32_MEMBER(vbl_ack_w);
INTERRUPT_GEN_MEMBER(vblank);
@ -51,11 +53,25 @@ private:
UINT32 m_palette[256], m_colors[3], m_count, m_clutoffs;
};
READ32_MEMBER(hp16500_state::vbl_state_r)
{
return 0x03000000; // bit 0 set means the interrupt handler advances the pSOS tick counter.
}
WRITE32_MEMBER(hp16500_state::vbl_ack_w)
{
m_maincpu->set_input_line(M68K_IRQ_1, CLEAR_LINE);
}
static ADDRESS_MAP_START(hp16500_map, AS_PROGRAM, 32, hp16500_state)
AM_RANGE(0x00000000, 0x0001ffff) AM_ROM AM_REGION("bios", 0)
AM_RANGE(0x0020f000, 0x0020f003) AM_WRITE(palette_w)
AM_RANGE(0x00200000, 0x0020efff) AM_RAM
AM_RANGE(0x00202800, 0x00202803) AM_WRITE(vbl_ack_w)
AM_RANGE(0x00203000, 0x00203003) AM_WRITE(vbl_ack_w)
AM_RANGE(0x00209800, 0x00209803) AM_READ(vbl_state_r)
AM_RANGE(0x0020b800, 0x0020b8ff) AM_RAM // system ram test is really strange.
AM_RANGE(0x00600000, 0x0061ffff) AM_WRITE16(vram_w, 0xffffffff)
AM_RANGE(0x00600000, 0x0067ffff) AM_READ8 (vram_r, 0x00ff00ff)
@ -66,7 +82,7 @@ ADDRESS_MAP_END
INTERRUPT_GEN_MEMBER(hp16500_state::vblank)
{
m_maincpu->set_input_line(M68K_IRQ_1, HOLD_LINE);
m_maincpu->set_input_line(M68K_IRQ_1, ASSERT_LINE);
}
void hp16500_state::video_start()
@ -121,14 +137,7 @@ WRITE32_MEMBER(hp16500_state::palette_w)
}
else if (mem_mask == 0x00ff0000)
{
UINT8 tmpcolor = (data>>16) & 0xff;
if ((tmpcolor & 0xf0) == 0x00)
{
tmpcolor |= (tmpcolor << 4);
}
m_colors[m_count++] = tmpcolor;
m_colors[m_count++] = (data>>14) & 0xfc;
if (m_count == 3)
{