MV1A: Difference between revisions
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#rad4-6 18.66kHz signal | #rad4-6 18.66kHz signal | ||
*A1 from Z80 looks ok | |||
*A0 from Z80 looks ok | |||
*/RD and /CS always high, not normal - signals traced to custom SNK Custom "NEO-D0 9535 B24" | |||
Revision as of 21:21, 23 March 2011
Mute Board
On MV4FS YM2610
- Datalines D0-D7 busy and healty on 4slot
- RAD0-RAD7 healthy static about 113kHz signals
- OP0 Clearly shows activity on sound
- SH1 and SH2 steady 55.56kHz signals
Mute MV1A
- rad0 18.66Khz signal
- rad1-3 0.25V 113khz triangle waveform
- rad4-6 18.66kHz signal
- A1 from Z80 looks ok
- A0 from Z80 looks ok
- /RD and /CS always high, not normal - signals traced to custom SNK Custom "NEO-D0 9535 B24"
