VOGONS


Reply 61 of 76, by Lennart

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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! 😀 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.

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    musicquest-ih9mq9.pdf
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    Music Quest IH9MQ9 schematics - 16-bit ISA version
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    Fair use/fair dealing exception

Reply 66 of 76, by keropi

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^ indeed 😉

main problem atm is PAL code and verification of RP1 and RP2 resistor networks.

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Reply 68 of 76, by mvmiller12

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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.

Reply 69 of 76, by keropi

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purchase? music quest doesn't even exist AFAIK...
getting an eprom with the new fw is another matter , pm me

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Reply 70 of 76, by vetz

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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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Reply 71 of 76, by keropi

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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 ( 🤣 ) and no code was recovered ( 🤣 ). So I've been working with Marmes (actually Marmes writes GAL code and I test it) to make a replacement chip.

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.
TIA! 😎

Last edited by keropi on 2020-07-29, 17:22. Edited 1 time in total.

🎵Link to buy a PCMIDI mpu
🎧Orpheus soundcard project
💻WTB Amstrad PC7486SLC-33 system

Reply 72 of 76, by shock__

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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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Reply 74 of 76, by keropi

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nsputnik wrote on 2020-07-29, 16:02:

I am wondering if anyone has the sequencer that was included with Music Quest MIDI Card called Easy-8. I checked the disk files (the drivers) linked to by the OP but did not see them.

well it was not in my boxed card, all I had was a disk with the driver/diagnostics that I uploaded...

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🎧Orpheus soundcard project
💻WTB Amstrad PC7486SLC-33 system

Reply 75 of 76, by matze79

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Anyway, Happy Birthday Keropi ! 😀

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Reply 76 of 76, by keropi

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matze79 wrote on 2020-07-30, 16:29:

Anyway, Happy Birthday Keropi ! 😀

hehe thanks!!!!!!

🎵Link to buy a PCMIDI mpu
🎧Orpheus soundcard project
💻WTB Amstrad PC7486SLC-33 system