-extern void (*readmem[0x10000])();
-extern void (*readmemb[0x10000])();
-extern void (*readmemh[0x10000])();
-extern void (*readmemd[0x10000])();
-extern void (*writemem[0x10000])();
-extern void (*writememb[0x10000])();
-extern void (*writememh[0x10000])();
-extern void (*writememd[0x10000])();
-
-extern unsigned int address, word;
-extern unsigned char byte;
-extern unsigned short hword;
-
-/* cycles */
+extern void *mem_rtab;
+extern void *mem_wtab;
+
+void jump_handler_read8(u32 addr, u32 *table, u32 cycles);
+void jump_handler_read16(u32 addr, u32 *table, u32 cycles);
+void jump_handler_read32(u32 addr, u32 *table, u32 cycles);
+void jump_handler_write8(u32 addr, u32 data, u32 cycles, u32 *table);
+void jump_handler_write16(u32 addr, u32 data, u32 cycles, u32 *table);
+void jump_handler_write32(u32 addr, u32 data, u32 cycles, u32 *table);
+void jump_handler_write_h(u32 addr, u32 data, u32 cycles, void *handler);
+void jump_handle_swl(u32 addr, u32 data, u32 cycles);
+void jump_handle_swr(u32 addr, u32 data, u32 cycles);
+void rcnt0_read_count_m0(u32 addr, u32, u32 cycles);
+void rcnt0_read_count_m1(u32 addr, u32, u32 cycles);
+void rcnt1_read_count_m0(u32 addr, u32, u32 cycles);
+void rcnt1_read_count_m1(u32 addr, u32, u32 cycles);
+void rcnt2_read_count_m0(u32 addr, u32, u32 cycles);
+void rcnt2_read_count_m1(u32 addr, u32, u32 cycles);
+
+extern unsigned int address;
+extern void *psxH_ptr;
+extern void *zeromem_ptr;
+extern void *scratch_buf_ptr;
+
+// same as invalid_code, just a region for ram write checks (inclusive)
+extern u32 inv_code_start, inv_code_end;
+
+/* cycles/irqs */