Viewing Issue Advanced Details
|ID||Category [?]||Severity [?]||Reproducibility||Date Submitted||Last Update|
|03370||Sound||Minor||Always||Aug 3, 2009, 01:45||Aug 13, 2009, 05:51|
|Tester||Tafoid||View Status||Public||Platform||MAME (Self-compiled)|
|Assigned To||Resolution||Fixed||OS||Windows 2000|
|Version||0.133u1||Fixed in Version||0.133u2||Build||Normal|
|Summary||03370: gng and clones: Music slows down while shooting|
A very noticeable slowdown of the FM music while shooting is present. The more you shoot, the slower it will go.
The clocks were verified in 0.133u1, so the problem lies in IRQ timing or other component.
|Steps To Reproduce|
|Affected Sets / Systems||gng and clones|
|There are no relationship linked to this issue.|
Aug 10, 2009, 11:42
The clock was verified by me. All I can say is that the original pcb use an epoxy block containing the z80 and some ttl chips (the bootlegs use a perfect replacement of the epoxy block!)
On the connector of the epoxy block there is no 3mhz clock, all the pins lies in the khz range, only one pin has a 1.5mhz clock.
As soon as possible I'll try to get a bootleg board to see if the z80 runs at 1.5mhz
Aug 12, 2009, 09:24
|sorry, my fault, there is a 3mhz clock on the epoxy block :) too many pins to check and it's easy to make an error :)|