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[Core/General] minor emulation fixes

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This commit is contained in:
EkeEke 2013-06-16 23:35:02 +02:00
parent 3eaa6e56ea
commit ff5771da47
3 changed files with 55 additions and 37 deletions
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4
source/loadrom.c
View File

@ -825,8 +825,8 @@ int load_rom(char *filename)
old_system[1] = input.system[1];
}
/* force MOUSE+MENACER configuration */
input.system[0] = SYSTEM_MOUSE;
/* force MENACER configuration */
input.system[0] = SYSTEM_MD_GAMEPAD;
input.system[1] = SYSTEM_MENACER;
input.x_offset = 68;
input.y_offset = -24;

2
source/m68k/m68kcpu.c
View File

@ -278,7 +278,7 @@ void m68k_run(unsigned int cycles)
m68ki_set_address_error_trap() /* auto-disable (see m68kcpu.h) */
#ifdef LOGVDP
error("[%d][%d] m68k run to %d cycles (%x)\n", v_counter, m68k.cycles, cycles, m68k.pc);
error("[%d][%d] m68k run to %d cycles (%x), irq mask = %x (%x)\n", v_counter, m68k.cycles, cycles, m68k.pc,FLAG_INT_MASK, CPU_INT_LEVEL);
#endif
while (m68k.cycles < cycles)

86
source/vdp_ctrl.c
View File

@ -977,7 +977,12 @@ void vdp_sms_ctrl_w(unsigned int data)
if (height != bitmap.viewport.h)
{
if (v_counter < bitmap.viewport.h)
if (status & 8)
{
/* viewport changes should be applied on next frame */
bitmap.viewport.changed |= 2;
}
else
{
/* update active display */
bitmap.viewport.h = height;
@ -1000,11 +1005,6 @@ void vdp_sms_ctrl_w(unsigned int data)
}
}
}
else
{
/* Changes should be applied on next frame */
bitmap.viewport.changed |= 2;
}
}
}
@ -1360,13 +1360,13 @@ unsigned int vdp_z80_ctrl_r(unsigned int cycles)
unsigned int vdp_hvc_r(unsigned int cycles)
{
int vc;
unsigned int temp = hvc_latch;
unsigned int data = hvc_latch;
/* Check if HVC is frozen */
if (!temp)
if (!data)
{
/* Cycle-accurate HCounter (Striker, Mickey Mania, Skitchin, Road Rash I,II,III, Sonic 3D Blast...) */
temp = hctab[cycles % MCYCLES_PER_LINE];
data = hctab[cycles % MCYCLES_PER_LINE];
}
else
{
@ -1376,12 +1376,12 @@ unsigned int vdp_hvc_r(unsigned int cycles)
#ifdef LOGVDP
error("[%d(%d)][%d(%d)] HVC read -> 0x%x (%x)\n", v_counter, (cycles/MCYCLES_PER_LINE-1)%lines_per_frame, cycles, cycles%MCYCLES_PER_LINE, hvc_latch & 0xffff, m68k_get_reg(M68K_REG_PC));
#endif
return (temp & 0xffff);
return (data & 0xffff);
}
else
{
/* Mode 4: VCounter runs normally, HCounter is frozen */
temp &= 0xff;
data &= 0xff;
}
}
@ -1404,12 +1404,12 @@ unsigned int vdp_hvc_r(unsigned int cycles)
vc = (vc & ~1) | ((vc >> 8) & 1);
}
temp |= ((vc & 0xff) << 8);
data |= ((vc & 0xff) << 8);
#ifdef LOGVDP
error("[%d(%d)][%d(%d)] HVC read -> 0x%x (%x)\n", v_counter, (cycles/MCYCLES_PER_LINE-1)%lines_per_frame, cycles, cycles%MCYCLES_PER_LINE, temp, m68k_get_reg(M68K_REG_PC));
error("[%d(%d)][%d(%d)] HVC read -> 0x%x (%x)\n", v_counter, (cycles/MCYCLES_PER_LINE-1)%lines_per_frame, cycles, cycles%MCYCLES_PER_LINE, data, m68k_get_reg(M68K_REG_PC));
#endif
return (temp);
return (data);
}
@ -1655,17 +1655,17 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
/* Mode 5 only */
if (d & 0x04)
{
if (v_counter < bitmap.viewport.h)
if (status & 8)
{
/* Changes should be applied on next frame */
bitmap.viewport.changed |= 2;
}
else
{
/* Update active display height */
bitmap.viewport.h = 224 + ((d & 8) << 1);
bitmap.viewport.y = (config.overscan & 1) * (8 - (d & 8) + 24*vdp_pal);
}
else
{
/* Changes should be applied on next frame */
bitmap.viewport.changed |= 2;
}
/* Update vertical counter max value */
vc_max = vc_table[(d >> 2) & 3][vdp_pal];
@ -1710,16 +1710,16 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
vdp_z80_data_r = vdp_z80_data_r_m5;
/* Change display height */
if (v_counter < bitmap.viewport.h)
if (status & 8)
{
/* Update active display */
bitmap.viewport.h = 224 + ((d & 8) << 1);
bitmap.viewport.y = (config.overscan & 1) * (8 - (d & 8) + 24*vdp_pal);
/* viewport changes should be applied on next frame */
bitmap.viewport.changed |= 2;
}
else
{
/* Changes should be applied on next frame */
bitmap.viewport.changed |= 2;
/* Update current frame active display height */
bitmap.viewport.h = 224 + ((d & 8) << 1);
bitmap.viewport.y = (config.overscan & 1) * (8 - (d & 8) + 24*vdp_pal);
}
/* Clear HVC latched value */
@ -1756,16 +1756,16 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
vdp_68k_data_r = vdp_68k_data_r_m4;
vdp_z80_data_r = vdp_z80_data_r_m4;
if (v_counter < bitmap.viewport.h)
if (status & 8)
{
/* Update active display height */
bitmap.viewport.h = 192;
bitmap.viewport.y = (config.overscan & 1) * 24 * (vdp_pal + 1);
/* viewport changes should be applied on next frame */
bitmap.viewport.changed |= 2;
}
else
{
/* Changes should be applied on next frame */
bitmap.viewport.changed |= 2;
/* Update current frame active display */
bitmap.viewport.h = 192;
bitmap.viewport.y = (config.overscan & 1) * 24 * (vdp_pal + 1);
}
/* Latch current HVC */
@ -2012,11 +2012,18 @@ static void vdp_reg_w(unsigned int r, unsigned int d, unsigned int cycles)
/* Redraw entire line */
render_line(v_counter);
}
else if (v_counter == (lines_per_frame - 1))
{
/* Update starting frame active display width */
bitmap.viewport.w = 256 + ((d & 1) << 6);
}
else
{
/* Changes should be applied on next frame (Golden Axe III intro) */
/* NB: This is not 100% accurate but is required by GCN/Wii port (GX texture direct mapping) */
/* and isn't noticeable anyway since display is generally disabled when active width is modified */
/* NB: not 100% accurate but required since backend framebuffer width cannot be modified mid-frame. */
/* This would require a fixed framebuffer width (based on TV screen aspect ratio) and pixel scaling */
/* to be done during rendering (depending on active display pixel aspect ratio in H32 or H40 mode). */
/* Display is generally disabled when this is modified so it shouldn't be really noticeable anyway. */
bitmap.viewport.changed |= 2;
}
}
@ -3013,6 +3020,12 @@ static void vdp_dma_copy(unsigned int length)
/* Update DMA source address */
dma_src = source;
}
else
{
/* DMA source & VRAM addresses are still incremented */
addr += reg[15] * length;
dma_src += length;
}
}
/* VRAM Fill (TODO: check if CRAM or VSRAM fill is possible) */
@ -3044,4 +3057,9 @@ static void vdp_dma_fill(unsigned int length)
}
while (--length);
}
else
{
/* VRAM address is still incremented */
addr += reg[15] * length;
}
}