ppu_read のタイミング修正. toggle bit がほぼ正しく読めるようになった

git-svn-id: svn+ssh://svn.osdn.net/svnroot/unagi@257 24ea1065-a21e-4ca1-99c9-f5125deb0858

diff --git a/client/trunk/reader_hongkongfc.c b/client/trunk/reader_hongkongfc.c
index 09f37ac..7f7f682 100644 (file)
--- a/client/trunk/reader_hongkongfc.c
+++ b/client/trunk/reader_hongkongfc.c
@@ -77,6 +77,7 @@ static inline void address_set(long address)
 static inline u8 data_port_get(long address, int bus)
 {
        address_set(address);
+       data_port_latch(DATA_SELECT_CONTROL, bus);
        port_control_write(DATA_SELECT_BREAK_DATA << BITNUM_CONTROL_DATA_SELECT, PORT_CONTROL_WRITE);
        int s = DATA_SELECT_READ << BITNUM_CONTROL_DATA_SELECT;
        s = bit_set(s, BITNUM_CONTROL_DATA_LATCH);
@@ -139,7 +140,7 @@ static void hk_cpu_read(long address, long length, u8 *data)
 {
        //fc bus ½é´ü²½
        data_port_latch(DATA_SELECT_CONTROL, BUS_CONTROL_CPU_READ);
-               //A15 ¤òȿž¤·¡¢ /ROMCS ¤Ë¤·¤¿¤â¤Î¤òÅϤ¹
+       //A15 ¤òȿž¤·¡¢ /ROMCS ¤Ë¤·¤¿¤â¤Î¤òÅϤ¹
        address ^= ADDRESS_MASK_A15;
        while(length != 0){
                *data = data_port_get(address, BUS_CONTROL_CPU_READ);
@@ -151,7 +152,8 @@ static void hk_cpu_read(long address, long length, u8 *data)
 
 static void hk_ppu_read(long address, long length, u8 *data)
 {
-       data_port_latch(DATA_SELECT_CONTROL, BUS_CONTROL_PPU_READ);
+       //data_port_latch(DATA_SELECT_CONTROL, BUS_CONTROL_PPU_READ);
+       data_port_latch(DATA_SELECT_CONTROL, BUS_CONTROL_BUS_STANDBY);
        address &= ADDRESS_MASK_A0toA12; //PPU charcter data area mask
        address |= ADDRESS_MASK_A15; //CPU area disk
        while(length != 0){
@@ -160,6 +162,7 @@ static void hk_ppu_read(long address, long length, u8 *data)
                data++;
                length--;
        }
+       data_port_latch(DATA_SELECT_CONTROL, BUS_CONTROL_BUS_STANDBY);
 }
 
 static inline void cpu_romcs_set(long address)
@@ -202,11 +205,11 @@ static void hk_cpu_6502_write(long address, long data, long wait_msec)
 }
 
 //onajimi ¤À¤È /CS ¤È /OE ¤¬Æ±¤¸¤Ë¤Ê¤Ã¤Æ¤¤¤ë¤¬¡¢hongkong¤À¤È»ß¤á¤é¤ì¤ë¡£½ñ¤­¹þ¤ß»þ¤Ë output enable ¤Ï H ¤Ç¤¢¤ë¤Ù¤­¡£
-#include <stdio.h>
 static void hk_ppu_write(long address, long data)
 {
        int c = BUS_CONTROL_BUS_STANDBY;
        c = bit_clear(c, BITNUM_CPU_M2); //¤¿¤Ö¤ó¤¤¤ë
+       //c = bit_clear(c, BITNUM_CPU_RW);
        data_port_latch(DATA_SELECT_CONTROL, c);
        //cpu rom ¤ò»ß¤á¤¿¥¢¥É¥ì¥¹¤òÅϤ¹
        address_set((address & ADDRESS_MASK_A0toA12) | ADDRESS_MASK_A15);