That port 380 is *not* MPU401 port but data+address port of YMF278, that normally only a driver or TSR talks to.

SW20PC driver will not work on the Miro PCM10 (or any other card for that matter) as SW20PC uses completely different way to get MPU401 emulation that no other card uses.
Basically YMZ290 on SW20PC (that no other card uses) emulates the MPU401 interface, captures data written to it and produces an interrupt that the DOS TSR will then use to turn that data into instructions for YMF278+SW20PC specific sample ROM on the card. The TSR also relies on timer IRQ from YMF278 itself to function also, without, music will stutter or be gone altogether.

From what I know there is no TSR for YMF278+YRW801 combo. All the cards using that combo that do not have their own MCU to turn MIDI into music (Miro PCM12 and PCM20 for example have), rely on windows driver to do MIDI music and will not function in pure DOS because of that.

Tiido wrote on 2024-02-07, 12:47:

That port 380 is *not* MPU401 port but data+address port of YMF278, that normally only a driver or TSR talks to. […]
Show full quote

That port 380 is *not* MPU401 port but data+address port of YMF278, that normally only a driver or TSR talks to.

SW20PC driver will not work on the Miro PCM10 (or any other card for that matter) as SW20PC uses completely different way to get MPU401 emulation that no other card uses.
Basically YMZ290 on SW20PC (that no other card uses) emulates the MPU401 interface, captures data written to it and produces an interrupt that the DOS TSR will then use to turn that data into instructions for YMF278+SW20PC specific sample ROM on the card. The TSR also relies on timer IRQ from YMF278 itself to function also, without, music will stutter or be gone altogether.

From what I know there is no TSR for YMF278+YRW801 combo. All the cards using that combo that do not have their own MCU to turn MIDI into music (Miro PCM12 and PCM20 for example have), rely on windows driver to do MIDI music and will not function in pure DOS because of that.

Tnx for info!
Currently OPL4DRV from Yamaha SW20 successfully loads and detect OPL4 PCM interface on port 380 with my Miro PCM10
(on my way I already disassemble OPL4DRV to find all the command line parameters)
Next step is to remap the standard 300-330-380 ports to my 380 and look what I get 😀 need to patch the SOFTMPU 1.91 port redirection

As I said before, that port 380 is *not* a MPU401 port, redirection of MIDI data to it will not get you music of any sort.

What can is using SoftMPU to capture the MIDI data as YMZ290 would, generate a fake interrupt for the OPL4DRV TSR and supply that captured data to the TSR by emulating YMZ290's FIFO port. Information is a bit lacking on how the chip works but if you really really want to undertake it, I can uncover my reverse engineering of it and share the info.

But there is still a very big snag : OPL4DRV is for the sample ROM only found on SW20PC, it will not work with YRW801 found on the Miro and other cards. While you are going to get sound due to way YMF278 works (it holds instrument definitions in the sample ROM), all the instruments will be completely off as YRW801 and the sample ROM on SW20PC have completely different instruments and ordering of them.

Tiido wrote on 2024-02-07, 13:36:

As I said before, that port 380 is *not* a MPU401 port, redirection of MIDI data to it will not get you music of any sort.

What can is using SoftMPU to capture the MIDI data as YMZ290 would, generate a fake interrupt for the OPL4DRV TSR and supply that captured data to the TSR by emulating YMZ290's FIFO port. Information is a bit lacking on how the chip works but if you really really want to undertake it, I can uncover my reverse engineering of it and share the info.

But there is still a very big snag : OPL4DRV is for the sample ROM only found on SW20PC, it will not work with YRW801 found on the Miro and other cards. While you are going to get sound due to way YMF278 works (it holds instrument definitions in the sample ROM), all the instruments will be completely off as YRW801 and the sample ROM on SW20PC have completely different instruments and ordering of them.

Bad news... To complex task(((
I hope to slightly patch the OPL4DRV or make a little conversion on the fly...
But its a to complex as for me((( SAD

For the memories Yamaha OPL4DRV command line parameters list:

-iX - IRQ (9 in my case)
-af0:XXXX - FM bank 0 (0388 in my case)
-af1:XXXX - FM bank 1 (038A in my case)
-afd:XXXX - FM data (0389 in my case)
-apa:XXXX - PCM address (0380 in my case)
-apd:XXXX - PCM data (0381 in my case)
-p### - percussion level (0-127)
-lfX - FM level (0-7)
-lpX - PCM level (0-7)
-hX - midi header (0-7)
-r - remove OPL4DRV from memory
-wXXX (integer without validation) ?
-sX - turn ON something when 1 and turn OFF if 0
-bX - turn ON something when 1 and turn OFF if 0
-nX - turn ON something when 1 and turn OFF if 0
-maX -miX -mnX -m- - don't know (maybe mADRESS, mIRQ???)

This is interesting info, I can try some of these switches when I restore access to one of my computers with SW20PC in it.

Could you try the opl4 drivers attached?

Tiido wrote on 2024-02-07, 20:05:

This is interesting info, I can try some of these switches when I restore access to one of my computers with SW20PC in it.

It looks lime -mXX parameters do something with IRQ and addresses

lolo799 wrote on 2024-02-07, 20:14:

Could you try the opl4 drivers attached?

They are the same i already use.

Babasha wrote on 2024-02-07, 14:06:

For the memories Yamaha OPL4DRV command line parameters list: […]
Show full quote

For the memories Yamaha OPL4DRV command line parameters list:

-iX - IRQ (9 in my case)
-af0:XXXX - FM bank 0 (0388 in my case)
-af1:XXXX - FM bank 1 (038A in my case)
-afd:XXXX - FM data (0389 in my case)
-apa:XXXX - PCM address (0380 in my case)
-apd:XXXX - PCM data (0381 in my case)
-p### - percussion level (0-127)
-lfX - FM level (0-7)
-lpX - PCM level (0-7)
-hX - midi header (0-7)
-r - remove OPL4DRV from memory
-wXXX (integer without validation) ?
-sX - turn ON something when 1 and turn OFF if 0
-bX - turn ON something when 1 and turn OFF if 0
-nX - turn ON something when 1 and turn OFF if 0
-maX -miX -mnX -m- - don't know (maybe mADRESS, mIRQ???)

-mXX gives me an error about "MEC not found" - what is MEC? questions-questions-questions)))

Anyway maybe -miX (MEC interrupt?), maX (MEC address?), -mnX (MEC number?), -m- (MEC disable?)

Tiido wrote on 2024-02-07, 20:05:

This is interesting info, I can try some of these switches when I restore access to one of my computers with SW20PC in it.

Tnx! it looks like SW DOS install utility creates .bat file C:\yamaha\ymhini.bat can you post it here?

MEC is YMZ290 I mentioned earlier, it is the MPU401 intefrace chip that captures data that the TSR will then use to actually make YMF278 to sing.

Such a file was not created in the installation I have. but here's an overview of what's in CONFIG.SYS and AUTEXEC.BAT (the values of SET OPL4DRV, KPCON and KPLOAD have been changed to my needs) :

1DEVICEHIGH=C:\YAMAHA\OPL4TSR.SYS
2
3SET BLASTER=A220 I5 D1 T4 P300
4SET OPL4DRV=-I3
5SET MAD16=C:\YAMAHA\MAD16
6C:\YAMAHA\MAD16\M16INIT /B
7C:\YAMAHA\KPCON /WAIT:1000 /TYPE:2 /T2AOR:2048 /T2AOL:2048 /T2DPT:256 /T2MIC:0
8C:\YAMAHA\KPLOAD.EXE C:\YAMAHA\TESTVERB.MBJ
9C:\YAMAHA\OPL4DRV

Babasha wrote on 2024-02-07, 22:42:

lolo799 wrote on 2024-02-07, 20:14:

Could you try the opl4 drivers attached?

They are the same i already use.

The exact same? Those are from a Panasonic OPL4 pcmcia card, they look different than the SW20 ones from vogonsdrivers.

Regarding DOS MIDI players, Mark A. Fontana's MFPLAY (GSPLAY previously) version 1.2 has

1; MPU401 PORT ADDRESS 
2; For MPU_ADDR, specify the port address (in hex) of your Roland MPU401
3; compatible MIDI interface. (Only UART-mode compatibility is required.)
4; For MPU_IRQ, specify the IRQ level of the interface (2-9).
5MPU_ADDR  330
6MPU_IRQ   2

in the MFPLAY.CFG configuration file. Have not tested other ports myself but perhaps worth a try?

lolo799 wrote on 2024-02-08, 13:31:

Babasha wrote on 2024-02-07, 22:42:

lolo799 wrote on 2024-02-07, 20:14:

Could you try the opl4 drivers attached?

They are the same i already use.

The exact same? Those are from a Panasonic OPL4 pcmcia card, they look different than the SW20 ones from vogonsdrivers.

Will look clother in near time! Tnx!

lolo799 wrote on 2024-02-08, 13:31:

Babasha wrote on 2024-02-07, 22:42:

lolo799 wrote on 2024-02-07, 20:14:

Could you try the opl4 drivers attached?

They are the same i already use.

The exact same? Those are from a Panasonic OPL4 pcmcia card, they look different than the SW20 ones from vogonsdrivers.

And its requires SCPRODOS.COM utility
Sad its not in archive(((

Babasha wrote on 2024-02-08, 20:25:

lolo799 wrote on 2024-02-08, 13:31:

Babasha wrote on 2024-02-07, 22:42:

They are the same i already use.

The exact same? Those are from a Panasonic OPL4 pcmcia card, they look different than the SW20 ones from vogonsdrivers.

And its requires SCPRODOS.COM utility
Sad its not in archive(((

scprodos is the driver for the pcmcia sound card, it won't work with anything else.

lolo799 wrote on 2024-02-09, 09:25:

Babasha wrote on 2024-02-08, 20:25:

lolo799 wrote on 2024-02-08, 13:31:

The exact same? Those are from a Panasonic OPL4 pcmcia card, they look different than the SW20 ones from vogonsdrivers.

And its requires SCPRODOS.COM utility
Sad its not in archive(((

scprodos is the driver for the pcmcia sound card, it won't work with anything else.

Tnx!

OPL4DRV for Panasonic PCMCIA don't work and hardcoded for PCMCIA

Found OPL4DRV for OKSORI ISA sound cards - this version more complex and include SETOPL4 utility and OPL4.DRV - but as usual don't work with Miro PCM10 (as I understand there no IRQ handler)
So OPL4DRV with success find OPL4 on port 380 but standard IRQ9 not routing to OPL4 part of sound card in hardware(((

Will stop my experiments 🙁

Its nice to hear beautiful OPL4? (FM+wavetable) sounds in pure DOS 😀
Sad - only one player gives me this is SBVGM - Re: SBVGM (DOS) VGM Player
As I understand it directly communicates with OPL4 YMF278 chip?
Or this is just emulation?