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author Justin Kerk <dopefishjustin@gmail.com>2019-03-31 22:29:51 +0000
committer Justin Kerk <dopefishjustin@gmail.com>2019-03-31 22:35:10 +0000
commit293fb66d7f56897f587721254e47d855241d514d (patch)
tree693e9b89a4badbc5989a488de988b83bfb587fc8
parent844245bcf2106bedc1b06ed81ee70a1b785bbab5 (diff)
Prevent integer overflow in Z80 CTC device, which causes a runtime error on WebAssembly builds. [Justin Kerk]
(nw) The issue was introduced in fc20d899ab83925a1169eeac2c61c70561b59ffb
-rw-r--r--src/devices/machine/z80ctc.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/devices/machine/z80ctc.cpp b/src/devices/machine/z80ctc.cpp
index 74adf998feb..307da7d534a 100644
--- a/src/devices/machine/z80ctc.cpp
+++ b/src/devices/machine/z80ctc.cpp
@@ -373,7 +373,10 @@ u8 z80ctc_channel_device::read()
LOG("CTC clock %f\n", period.as_hz());
- return u8((m_timer->remaining().as_double() / period.as_double()) + 1.0);
+ if(!m_timer->remaining().is_never())
+ return u8((m_timer->remaining().as_double() / period.as_double()) + 1.0);
+ else
+ return 0;
}
}