Test of YM2612 (run on hardware needed)
Posted: Sun Aug 26, 2007 4:02 pm
Eke asked in neighbor thread, if multi-frequency mode works on channel 6 (channel 3 of second bank) of YM2612. I want to know this too, so I wrote small test in C (compiled with SGCC). If anybody can run this test on real hardware, we surely will know:
- If multi-freq mode works on channel 3 (must work)
- If multi-freq mode works on channel 6 (not known)
- If it possible to keyon operators separately (must work)
- Which connection has operators with bits in key on/off register (seems 0-1-3-2)
Test automatically do this things:
- Setup operators of channels 3 and 6 for multi-freq mode, Cmaj accord with octave double (C-4 E-4 G-4 C-5 for operators which correspons to registers A6A2, ACA8, ADA9, AEAA)
- Play note in normal mode on ch3 (all operators at once)
- Play note in normal mode on ch6 (all operators at once)
- Play note in multi mode on ch3 (all operators at once)
- Play note in multi mode on ch6 (all operators at once)
- Play note in normal mode on ch3, all operators switches on with small delay, one by one
- Play note in multi mode on ch3, all operators switches on with small delay, one by one
It will be better, if output sound will be recorded in sound file to analyze. Compiled test and source code is here.
- If multi-freq mode works on channel 3 (must work)
- If multi-freq mode works on channel 6 (not known)
- If it possible to keyon operators separately (must work)
- Which connection has operators with bits in key on/off register (seems 0-1-3-2)
Test automatically do this things:
- Setup operators of channels 3 and 6 for multi-freq mode, Cmaj accord with octave double (C-4 E-4 G-4 C-5 for operators which correspons to registers A6A2, ACA8, ADA9, AEAA)
- Play note in normal mode on ch3 (all operators at once)
- Play note in normal mode on ch6 (all operators at once)
- Play note in multi mode on ch3 (all operators at once)
- Play note in multi mode on ch6 (all operators at once)
- Play note in normal mode on ch3, all operators switches on with small delay, one by one
- Play note in multi mode on ch3, all operators switches on with small delay, one by one
It will be better, if output sound will be recorded in sound file to analyze. Compiled test and source code is here.