Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-13, 10:27

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by nukeykt

in Release Announcements

in Release Announcements

Does the implementation use anything specific to Altera or Cyclone V? If not, probably any FPGA board would do as long as there's enough resources and exposed IOs... nope, It doesn't I think You planning on taking it any further? I've been learning verilog on the ice40, maybe it could be ported to …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-13, 07:38

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by nukeykt

in Release Announcements

in Release Announcements

Nice, but the description is a bit short. What kind of FPGA you used? Is it this dev board? https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&No=1046 yea, terasic de10-nano (aka mister fpga). Cheaper devboards could be used as well, logic size is not that big Did you implement …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2024-04-12, 20:37

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by nukeykt

in Release Announcements

in Release Announcements

probably a bit off-topic, but maybe you'll find this interesting :) https://github.com/nukeykt/LPC-Sound-Blaster instead of building LPC-ISA adapter, I tried to directly implement sound blaster compatible 'dsp' over lpc bus using verilog. I used z97 based asus rog maximus vii ranger, LDRQ1 was found …

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Re: [RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-04-10, 18:19

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by nukeykt

in Release Announcements

in Release Announcements

v0.2.0 version released: SC-55mk1, CM-300/SCC-1, SC-55st are supported now Fix filter overflow on mk2 https://github.com/nukeykt/Nuked-SC55/release … g/0.2.0-hotfix2

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Re: Nuked-SC55, low-level Roland SC-55mkII emulator announcement

Posted on 2024-04-02, 12:30

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by nukeykt

in Release Announcements

in Release Announcements

Test version is on github now: https://github.com/nukeykt/Nuked-SC55/releases/tag/0.1.0

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Re: Nuked-SC55, low-level Roland SC-55mkII emulator announcement

Posted on 2024-03-15, 17:01

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by nukeykt

in Release Announcements

in Release Announcements

I don't have complete ROM dumps for original sc-55 to support it

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Re: Nuked-SC55, low-level Roland SC-55mkII emulator announcement

Posted on 2024-03-15, 08:40

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by nukeykt

in Release Announcements

in Release Announcements

not possible with approach I use I guess, all code inside firmware assumes 28 voices and pcm chip has hard limit of 28 voices (curiosly, on original sc-55 pcm chip DOES support 28 voices, it is just firmware is compiled to work with 24). SC-55 firmware does fair amount of the processing actually ( …

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[RELEASE] Nuked-SC55, low-level Roland SC-55 series emulator announcement

Posted on 2024-03-14, 16:29

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by nukeykt

in Release Announcements

in Release Announcements

Original text Hi, guess folks over here might be interested on the project I've been working on, so I'm making thread about it. this is continuation of my early sc-55 emulation attempt I started in 2021. The basic idea was to emulate all main chips in proper way and use original SC-55 firmware as …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2023-12-04, 06:25

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by nukeykt

in Release Announcements

in Release Announcements

I was wrong, the AMD motherboard (NO WORKY) is aborting the 0x4F read (i.e. asserting LFRAME) halfway through the cycle. I wonder why it would do that, and if it's the same for all addresses or just 4F... I wonder if this is some subtractive decoding weirdness turnaround (TAR) should be 2 cycles …

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Re: About Roland Virtual Sound Canvas 3

Posted on 2020-12-16, 00:13

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

I have sc-55mkII control ROM dump if it is useful to anyone

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Re: About Roland Virtual Sound Canvas 3

Posted on 2020-12-16, 00:04

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

kitrinx wrote on 2020-12-15, 23:49: Edit: Added roms Woah, thanks for sharing these

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Re: About Roland Virtual Sound Canvas 3

Posted on 2020-12-15, 23:55

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

Thanks for confirming, guess I should try once again or find dump elsewhere

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Re: About Roland Virtual Sound Canvas 3

Posted on 2020-12-15, 23:38

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

A bit offtopic question. But does MKII wave rom differ from MK1? I once tried to desolder rom chips but ended up breaking chip legs, so I don't want to touch it again.

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Re: About Roland Virtual Sound Canvas 3

Posted on 2020-12-04, 20:54

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

H8/532 CPU that SC-55 use has internal 32K mask ROM

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Re: About Roland Virtual Sound Canvas 3

Posted on 2020-12-04, 20:25

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

Did anyone manage to dump internal SC-55 cpu ROM?

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Re: New sound card project: AWE64 Legacy

Posted on 2020-06-22, 06:10

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

Hey guys, a quick question: is anybody aware of any game or software that can access OPL3 only at the SB base port (220/240) and not at the classic Adlib port (388)? We're thinking about adding some circuitry to mirror the OPL3 at SB base port, but unexpectedly haven't found a single game that …

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Re: DOSBOX fork with better FM synthesis?

Posted on 2019-02-24, 10:11

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by nukeykt

in DOSBox General

in DOSBox General

I know this is an old topic, but recently I found another OPL3 emulator. This one is the OPAL OPL3 emulator from Reality Adlib Tracker. I made it easier to integrate into projects and wrote a wrapper for it. https://github.com/datajake1999/OPL3EMU/tree/master/Driver/Opal I am attaching recordings …

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Re: Is there a game that uses both MIDI and FM at the same time?

Posted on 2019-02-18, 08:32

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by nukeykt

in Milliways

in Milliways

Raptor can do this as well as Doom engine games with some modification. All these games use DMX sound library

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Re: I've got the OPL3 synth from a CMI8738 working in Windows 7 x64

Posted on 2018-12-21, 09:12

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by nukeykt

in Marvin \ Sound

in Marvin \ Sound

@nukeykt : I hope you will see this (because as new member I am not allowed to send private messages) and be so kind to help me. So, I want to use your "cmiopl.zip" on WinXP, but what's inside your "cmiopl.zip" fails (I get "yellow exclamation marks" in Control Panel-->Device Manager). My best …

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Re: Is OPLEMU inaccurate?

Posted on 2018-08-09, 11:50

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by nukeykt

in DOSBox Development

in DOSBox Development

Differences between OPL2 and OPL3 in OPL2 mode are quite subtle and are not audible. Also DOSBox default OPL core does things closer to OPL2 rather than OPL3.

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