Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Discussion about old PC hardware.

Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby PeterLI » 2014-6-25 @ 19:38

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Last edited by PeterLI on 2016-12-15 @ 19:52, edited 1 time in total.
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby Lennart » 2014-8-30 @ 15:06

I've made a schematic for the 16-bit ISA version of this card, which I've attached to this post. I hope it's useful to someone! :happy: The schematic is fairly complete, apart from some decoupling capacitors which I left out. Note that the 8-bit ISA version is very similar, except that it doesn't allow IRQ 10/11/12 to be selected and it has a separate ROM chip for the program code, whereas the 16-bit ISA version has an on-chip ROM embedded within the microcontroller.
Attachments
musicquest-ih9mq9.pdf
Music Quest IH9MQ9 schematics - 16-bit ISA version
(194.32 KiB) Downloaded 112 times
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby carlostex » 2014-10-02 @ 13:02

Does anyone know if the breakout cable for the Music Quest card will also work with a MIDIMAN MM-401?
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby Stojke » 2014-10-02 @ 13:33

It worked on MIDI Land DX-401, check the PCB traces.
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby carlostex » 2014-10-02 @ 19:37

Stojke wrote:It worked on MIDI Land DX-401, check the PCB traces.


Can't check right now, card is in Portugal i'm on the UK.
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby Marmes » 2015-2-28 @ 20:18

PCB is doable :)
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby keropi » 2015-2-28 @ 20:39

^ indeed ;)

main problem atm is PAL code and verification of RP1 and RP2 resistor networks.
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby Marmes » 2015-2-28 @ 20:48

now all we need is tha pal code :P RP is easy to see.
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby mvmiller12 » 2015-4-28 @ 04:11

So. . . is it possible to purchase a pair of updated v010 ROMs to replace the v004 ROMs I have on my pair of these? If so, it would really resolve a lot of kludgy workarounds that I have to keep running on my 486DX4/100.
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby keropi » 2015-4-28 @ 07:37

purchase? music quest doesn't even exist AFAIK...
getting an eprom with the new fw is another matter , pm me
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby vetz » 2015-4-30 @ 16:08

bjt wrote:Does WC work with the Music Quest card if SoftMPU is loaded?

Browsed through this whole thread and internet to find answer to this. Well, I got my own Music Quest MQX-32 and the answer is that SoftMPU fixes the crash :)

The MQX-32 has the same crash problem in WC as the PC MIDI card with rom 004.
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby keropi » 2015-6-14 @ 17:50

allright gents, here are the new developments on the this little card...
I decided to hack-read the PAL on U5 so we can get the code. The PAL died ( lol ) and no code was recovered ( lol ). So I've been working with Marmes (actually Marmes writes GAL code and I test it) to make a replacement chip.
The deduction is that the PAL is responsible for "Board Enable" and "Data Read / Write" functions on port 300 or 330 , depending if the jumper is installed or not. It also activates the nearby 74LS374 to do the reading and also sends some sort of signal to the Z0868112PSC (pins 39 and 12). - please keep in mind that this is the general idea as I understood it -

So basically we have the code that enables the board and setups reads/writes (all done by the books as per ISA specs) but the MPU insists to not getting detected :neutral: .
I do have another identical MPU and the good PAL works on the board with the dead PAL, so the only thing lost is 1x read protected PAL.

We do have the ROM code (the z8 firmware) in case someone wants to see it. What we don't have to help is the actual datasheet for the Z0868112PSC MCU , so Marmes can determine what is going on with the card. The closest datasheet I could find was one for the "Z8® Z8681/82 ROMless Microcomputer" that I am attaching here but it didn't help that much.

If anyone can help with this please reply, even a hint could be helpfull , or a datasheet or some idea to test in conjunction with the 2nd working MPU and get things rolling :blush:

TIA! :cool:
Attachments
Z8681_Data_Sheet_Mar83.pdf
Z8® Z8681/82 ROMless Microcomputer datasheet
(1.38 MiB) Downloaded 56 times
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Re: Music Quest PC MIDI Card MPU IH9MQ9 : info , drivers and tests

Postby shock__ » 2015-6-14 @ 18:12

Last 2 numbers usually indicate the maximum frequency in Zilog (co-)processors. So the datasheet you have is very likely to be the correct one.
The probably changed the Z8 -> Z08 to avoid confusion later on when the Z80 became more widespread.
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