summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDavid McMackins II <contact@mcmackins.org>2016-12-02 10:46:47 -0600
committerDavid McMackins II <contact@mcmackins.org>2016-12-02 10:46:47 -0600
commit31c7fd560f4046901733144141eb1bf0eddbd649 (patch)
tree5adb3851ac0b25e4066d1a2009ec6250f4cf6e70
parent8199ee2a5a7c91e9fd2c1739110a4342872f3e5c (diff)
Fix bug where switching ROM banks on MBC5 on DMG would fail
-rw-r--r--stdgb.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/stdgb.c b/stdgb.c
index e2347bb..7b37f3f 100644
--- a/stdgb.c
+++ b/stdgb.c
@@ -24,7 +24,11 @@ static uint8_t * const BTN_STATE = (void *) 0xDFA1;
void
gb_mbc5_select_rombank (uint16_t bank)
{
- *((uint16_t *) 0x2FFF) = bank;
+ uint8_t upper = (bank & 0xFF00) >> 8;
+ uint8_t lower = bank & 0x00FF;
+
+ *((uint8_t *) 0x3000) = upper;
+ *((uint8_t *) 0x2000) = lower;
}
static void