diff options
author | Michaël Banaan Ananas <happppp@users.noreply.github.com> | 2013-11-03 19:27:24 +0000 |
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committer | Michaël Banaan Ananas <happppp@users.noreply.github.com> | 2013-11-03 19:27:24 +0000 |
commit | b5091762d7dbc22a8130f23a47d5c3dd84cc292b (patch) | |
tree | 05d2a524b9a0f5b8541ae037c33abc7341f7edae /src/mame/drivers/mazerbla.c | |
parent | 6086201c515a5cd1182bdc9de2bb722a659983fa (diff) |
update note
Diffstat (limited to 'src/mame/drivers/mazerbla.c')
-rw-r--r-- | src/mame/drivers/mazerbla.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/mame/drivers/mazerbla.c b/src/mame/drivers/mazerbla.c index 67f63a3f163..676ecd7bb65 100644 --- a/src/mame/drivers/mazerbla.c +++ b/src/mame/drivers/mazerbla.c @@ -1361,10 +1361,11 @@ IRQ_CALLBACK_MEMBER(mazerbla_state::irq_callback) /* D1 is set to GND when INT comes from CFB */ /* D2 is set to GND when INT comes from ZPU board - from 6850 on schematics (RS232 controller) */ - /* resulting vectors: - 1111 11000 (0xf8) - results in same as 0xfc - 1111 11010 (0xfa) - does nothing - 1111 11100 (0xfc) - calls several routines + /* resulting vectors: - effect according to disasm: + -------------------------------------------------------- + 1111 11000 (0xf8) - results in same as 0xfc + 1111 11010 (0xfa) - does nothing, assume it was used for debugging + 1111 11100 (0xfc) - calls several routines note: 1111 11110 (0xfe) - cannot happen and is not handled by game */ |