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-rw-r--r--src/kdata.asm2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/kdata.asm b/src/kdata.asm
index b0cd71b..13dc6dd 100644
--- a/src/kdata.asm
+++ b/src/kdata.asm
@@ -66,3 +66,5 @@ wBootA:: DS 1 ; A at entry: console model from the boot ROM
wBootB:: DS 1 ; B at entry: bit0 set = AGB (GBA in CGB mode)
wBootFsFresh::DS 1 ; fs_init formatted a blank disk this boot
wTicks:: DS 4 ; monotonic 64 Hz system tick (TimerISR), LE
+wTickTog:: DS 1 ; TimerISR fires at 128 Hz in double-speed mode;
+ ; this toggle keeps wTicks counting at 64 Hz