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-rw-r--r--source/seta011.c50
1 files changed, 11 insertions, 39 deletions
diff --git a/source/seta011.c b/source/seta011.c
index a005f98..10cd40b 100644
--- a/source/seta011.c
+++ b/source/seta011.c
@@ -1,30 +1,19 @@
#include "../copyright"
-#include <stdio.h>
#include "seta.h"
#include "memmap.h"
ST011_Regs ST011;
-
-// shougi playboard
-uint8_t board[9][9];
-
-// debug
-static int32_t line = 0;
+uint8_t board[9][9]; // shougi playboard
uint8_t S9xGetST011(uint32_t Address)
{
uint8_t t;
uint16_t address = (uint16_t) Address & 0xFFFF;
- // line counter
- line++;
-
- // status check
- if (address == 0x01)
+ if (address == 0x01) // status check
t = 0xFF;
- // read directly from s-ram
- else
+ else // read directly from s-ram
t = Memory.SRAM[address];
return t;
@@ -35,23 +24,17 @@ void S9xSetST011(uint32_t Address, uint8_t Byte)
uint16_t address = (uint16_t) Address & 0xFFFF;
static bool reset = false;
- // debug
- line++;
-
- if (!reset)
+ if (!reset) // bootup values
{
- // bootup values
ST011.waiting4command = true;
reset = true;
}
Memory.SRAM[address] = Byte;
- // op commands/data goes through this address
- if (address == 0x00)
+ if (address == 0x00) // op commands/data goes through this address
{
- // check for new commands
- if (ST011.waiting4command)
+ if (ST011.waiting4command) // check for new commands
{
ST011.waiting4command = false;
ST011.command = Byte;
@@ -84,15 +67,13 @@ void S9xSetST011(uint32_t Address, uint8_t Byte)
}
}
- if (ST011.in_count == ST011.in_index)
+ if (ST011.in_count == ST011.in_index) // Actually execute the command
{
- // Actually execute the command
ST011.waiting4command = true;
ST011.out_index = 0;
switch (ST011.command)
{
- // unknown: download playboard
- case 0x01:
+ case 0x01: // unknown: download playboard
{
// 9x9 board data: top to bottom, left to right
// Values represent piece types and ownership
@@ -101,11 +82,7 @@ void S9xSetST011(uint32_t Address, uint8_t Byte)
memcpy(board[lcv], ST011.parameters + lcv * 10, 9 * 1);
break;
}
- // unknown
- case 0x02:
- break;
- // unknown
- case 0x04:
+ case 0x04: // unknown
case 0x05:
{
// outputs
@@ -113,18 +90,13 @@ void S9xSetST011(uint32_t Address, uint8_t Byte)
Memory.SRAM[0x12E] = 0x00;
break;
}
- // unknown
- case 0x06:
- case 0x07:
- break;
- // unknown
- case 0x0E:
+ case 0x0E: // unknown
{
// outputs
Memory.SRAM[0x12C] = 0x00;
Memory.SRAM[0x12D] = 0x00;
+ break;
}
- break;
}
}
}