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model2.cpp: render_mode can be read back, cfr. Gunblade NY (nw)

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This commit is contained in:
angelosa 2018-02-20 23:39:55 +01:00
parent d3c5d26c7d
commit 7e8bda02ee
2 changed files with 20 additions and 4 deletions
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20
src/mame/drivers/model2.cpp
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@ -1392,12 +1392,20 @@ WRITE32_MEMBER(model2_state::copro_w)
}
#endif
WRITE32_MEMBER(model2_state::mode_w)
READ32_MEMBER(model2_state::render_mode_r)
{
return (m_render_unk << 14) | (m_render_mode << 2);
}
WRITE32_MEMBER(model2_state::render_mode_w)
{
// ---- -x-- (1) 60 Hz mode
// (0) 30 Hz mode - skytargt, desert, vstriker, vcop
// ---- ---x Test Mode (Host can "access memories that are always being reloaded")
m_render_mode = bool(BIT(data,2));
// undocumented, unknown purpose
m_render_unk = bool(BIT(data,14));
// osd_printf_debug("Mode = %08X\n", data);
}
@ -1490,9 +1498,14 @@ ADDRESS_MAP_START(model2_state::model2_base_mem)
// "extra" data
AM_RANGE(0x06000000, 0x06ffffff) AM_ROM AM_REGION("user1", 0x1000000)
AM_RANGE(0x10000000, 0x101fffff) AM_WRITE(mode_w)
AM_RANGE(0x10000000, 0x101fffff) AM_READWRITE(render_mode_r,render_mode_w)
// AM_RANGE(0x10200000, 0x103fffff) renderer status register
AM_RANGE(0x10400000, 0x105fffff) AM_READ(polygon_count_r)
// AM_RANGE(0x10600000, 0x107fffff) polygon data ping
// AM_RANGE(0x10800000, 0x109fffff) polygon data pong
// AM_RANGE(0x10a00000, 0x10bfffff) fill memory ping
// AM_RANGE(0x10c00000, 0x10dfffff) fill memory pong
// format is xGGGGGBBBBBRRRRR (512x400)
AM_RANGE(0x11600000, 0x1167ffff) AM_RAM AM_SHARE("fbvram1") // framebuffer A (last bronx title screen)
AM_RANGE(0x11680000, 0x116fffff) AM_RAM AM_SHARE("fbvram2") // framebuffer B
@ -1647,6 +1660,7 @@ ADDRESS_MAP_START(model2_state::model2b_crx_mem)
AM_RANGE(0x01c00000, 0x01c0001f) AM_READ8(model2_crx_in_r, 0x00ff00ff)
AM_RANGE(0x01c00000, 0x01c00003) AM_WRITE(ctrl0_w)
AM_RANGE(0x01c00008, 0x01c0000b) AM_WRITENOP
AM_RANGE(0x01c00010, 0x01c00013) AM_WRITENOP // gunblade
AM_RANGE(0x01c00014, 0x01c00017) AM_WRITE(hotd_lightgun_w)
AM_RANGE(0x01c0001c, 0x01c0001f) AM_WRITE(analog_2b_w)
AM_RANGE(0x01c00040, 0x01c00043) AM_WRITENOP

4
src/mame/includes/model2.h
View File

@ -190,7 +190,8 @@ public:
void raster_init(memory_region *texture_rom);
void geo_init(memory_region *polygon_rom);
DECLARE_READ32_MEMBER(maxx_r);
DECLARE_WRITE32_MEMBER(mode_w);
DECLARE_READ32_MEMBER(render_mode_r);
DECLARE_WRITE32_MEMBER(render_mode_w);
DECLARE_WRITE32_MEMBER(model2o_tex_w0);
DECLARE_WRITE32_MEMBER(model2o_tex_w1);
DECLARE_READ16_MEMBER(lumaram_r);
@ -294,6 +295,7 @@ protected:
virtual void video_start() override;
private:
bool m_render_unk;
bool m_render_mode;
};