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https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-09-10 16:53:15 +02:00
[Core/VDP]
-added support for nametable registers writes during HBLANK: fixes The Adventures of Batman & Robin (graphical issues during 2nd Boss fight) -added support for VSRAM writes during HBLANK in 2-cell VSCROLL mode: fixes The Adventures of Batman & Robin (graphical issues during 2nd Boss fight)
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@ -1792,6 +1792,13 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
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{
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reg[2] = d;
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ntab = (d << 10) & 0xE000;
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/* Plane A Name Table Base changed during HBLANK */
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if ((v_counter < bitmap.viewport.h) && (reg[1] & 0x40) && (cycles <= (mcycles_vdp + 860)))
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{
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/* render entire line */
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render_line(v_counter);
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}
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break;
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}
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@ -1806,6 +1813,13 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
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{
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ntwb = (d << 10) & 0xF800;
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}
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/* Window Plane Name Table Base changed during HBLANK */
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if ((v_counter < bitmap.viewport.h) && (reg[1] & 0x40) && (cycles <= (mcycles_vdp + 860)))
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{
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/* render entire line */
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render_line(v_counter);
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}
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break;
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}
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@ -1813,6 +1827,14 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
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{
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reg[4] = d;
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ntbb = (d << 13) & 0xE000;
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/* Plane B Name Table Base changed during HBLANK (Adventures of Batman & Robin) */
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if ((v_counter < bitmap.viewport.h) && (reg[1] & 0x40) && (cycles <= (mcycles_vdp + 860)))
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{
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/* render entire line */
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render_line(v_counter);
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}
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break;
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}
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@ -1852,18 +1874,7 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
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{
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/* remap entire line */
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remap_line(v_counter);
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#ifdef LOGVDP
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error("Line remapped\n");
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#endif
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}
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#ifdef LOGVDP
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else
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{
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error("Line NOT remapped\n");
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}
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#endif
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}
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break;
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}
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@ -2154,13 +2165,7 @@ static void vdp_bus_w(unsigned int data)
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{
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/* Remap current line */
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remap_line(v_counter);
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#ifdef LOGVDP
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error("Line remapped\n");
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#endif
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}
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#ifdef LOGVDP
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else error("Line NOT remapped\n");
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#endif
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}
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break;
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}
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@ -2171,6 +2176,17 @@ static void vdp_bus_w(unsigned int data)
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error("[%d(%d)][%d(%d)] VSRAM 0x%x write -> 0x%x (%x)\n", v_counter, mcycles_68k/MCYCLES_PER_LINE-1, mcycles_68k, mcycles_68k%MCYCLES_PER_LINE, addr, data, m68k_get_reg(M68K_REG_PC));
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#endif
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*(uint16 *)&vsram[addr & 0x7E] = data;
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/* 2-cell Vscroll mode */
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if (reg[11] & 0x04)
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{
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/* VSRAM writes during HBLANK (Adventures of Batman & Robin) */
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if ((v_counter < bitmap.viewport.h) && (reg[1]& 0x40) && (mcycles_68k <= (mcycles_vdp + 860)))
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{
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/* Remap current line */
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render_line(v_counter);
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}
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}
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break;
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}
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