Re: How-to / info: NEC Powermate 386 BIOS setup utility

Posted on 2024-02-01, 13:32

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

386_junkie wrote on 2024-02-01, 10:21: Thank you, thank you, thank you... if you didn't save and upload mR_Slug's ftp.necam dump, and ID that HS386_33 is for the 386/33E EISA bus system... I would have only a very big (and heavy!) paperweight. Awesome 😀 👍

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BusTek BT-742A EISA SCSI adapter problem with >1GB HDs - fix

Posted on 2023-09-08, 06:53

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi all, I went around in circles on this one so I'm posting here for posterity in case this info helps someone else on day. I've just done an EISA build using the BusTek BT-742A SCSI controller. This has support for >1GB disks, but unfortunately it was not working. With >1GB support enabled, fdisk …

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Re: Identifying memory (or the board itself) on this 386DX motherboard

Posted on 2023-02-04, 10:44

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I recently got this motherboard. It's been quite a mystery since the only manufacturer silkscreen label on it is just "PAT386 +-1". I'm a bit lost on the (proprietary?) memory slots. They are standard AT ISA connectors but they're mounted backwards from all the other ones on the board. Hope this …

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Re: TVGA9200CXr BIOS

Posted on 2022-06-23, 07:35

by

by InbetweenDays

in Marvin \ Video

in Marvin \ Video

Thanks PDXTony, much appreciated 😀

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Re: CM-500 for DOS games - ways to use it, and some sysex files

Posted on 2022-02-13, 03:49

by

by InbetweenDays

in Marvin \ Sound

in Marvin \ Sound

Also, Mode B is CM64 Simulation. CM500 does not contain any 32P hardware. It uses the CM300's instruments to replace the missing 32P. Yep... but the same applies in terms of functionality and the CM32P parts playing on MIDI channels 11-16. Those parts need to be turned off for games like those I …

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Re: Fixing the Roland CM-500 Vibrato Bug

Posted on 2022-02-12, 09:55

by

by InbetweenDays

in Marvin \ Sound

in Marvin \ Sound

I've just finished this mod and it really is very straightforward. Taking my time with the soldering work, in total it took just under an hour - including dumping of the ROM & downloading a patching utility etc. What can I say? It's perfect. 👍 Thanks for sharing the great work! 😀

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CM-500 for DOS games - ways to use it, and some sysex files

Posted on 2022-02-11, 15:41

by

by InbetweenDays

in Marvin \ Sound

in Marvin \ Sound

Hi all, Since a fix for the CM-500 vibrato issue has just been posted, perhaps there'll be renewed interest in these modules and the below will help someone. After getting my CM500 I went looking for sysex files and ended up making what I needed along with some batch files. I thought I'd post them …

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Re: Fixing the Roland CM-500 Vibrato Bug

Posted on 2022-02-11, 08:57

by

by InbetweenDays

in Marvin \ Sound

in Marvin \ Sound

Awesome... great work!!

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Re: TVGA9200CXr BIOS

Posted on 2022-01-18, 11:06

by

by InbetweenDays

in Marvin \ Video

in Marvin \ Video

Yes please 😊

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Re: How-to / info: NEC Powermate 386 BIOS setup utility

Posted on 2021-12-06, 22:38

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good stuff, well done!

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Re: How-to / info: NEC Powermate 386 BIOS setup utility

Posted on 2021-12-06, 14:51

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sorry my bad re the keyboard port. I was misremembering. Yes if it has a Dallas RTC that has the battery, and you can do the common mod to attach a CR2032 holder rather than replacing it. For the archive, see the link to vogonsdrivers in my first post above .

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Re: How-to / info: NEC Powermate 386 BIOS setup utility

Posted on 2021-12-06, 07:41

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, there should be a header for an external battery between the keyboard port and ISA slot. You could also get a configuration error if something wasn't set properly - eg saying there's a coprocessor when there isn't, or vice versa. I assume you used the SX/20 utility from the Old.Powermate …

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Re: PS/2 to serial mouse adapter differences

Posted on 2021-07-30, 13:20

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[quote=weedeewee post_id=987173 time=1627646154 user_id=45525] is the shield still connected and maybe connected to some pin ? [/quote] hmm good point, I should have checked that... tomorrow maybe!

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Re: PS/2 to serial mouse adapter differences

Posted on 2021-07-30, 13:20

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

1541 wrote on 2021-07-30, 11:22: For PS/2 mice that do not support the serial protocol anymore, you'll need a more sophisticated solution: PS/2 to Microsoft Serialmouse Adapter Converter / Updated First Post / Firmware Update added Yes, I know... or the easier solution in such cases is probably …

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Re: PS/2 to serial mouse adapter differences

Posted on 2021-07-30, 09:59

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

By the way, the light grey adapter has this pinout: Filename pinout3.jpg File size 9.39 KiB Views 631 views It doesn't work at all, which isn't surprising since only 3 pins are connected. I guess it's for some other system and/or faulty. Has anyone seen this type before?

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PS/2 to serial mouse adapter differences

Posted on 2021-07-30, 09:57

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a serial + PS/2 compatible mouse that I use on my test bench, and wanted to get a spare because it's so useful. It's a Microsoft wheel mouse - the spares I picked up today are the MS Basic ones (no wheel). Interestingly they worked fine with the PS/2 port, but not with the PS/2 to serial …

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TVGA9200CXr BIOS

Posted on 2021-04-21, 01:48

by

by InbetweenDays

in Marvin \ Video

in Marvin \ Video

Hi all, I'm looking for the BIOS for a Trident TVGA9200CXr VLB card... anyone have one and able to dump the BIOS for me? (Easy using NSSI). Thanks!

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Re: How to: IBM 4865 external 720k floppy drive (Alps DFL413C02B) head alignment

Posted on 2021-04-16, 07:03

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That's awesome... well done and glad to hear you got it working nicely!

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Re: How to: IBM 4865 external 720k floppy drive (Alps DFL413C02B) head alignment

Posted on 2021-04-15, 09:57

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's quite possible that once you get a track somewhere in the middle working ok, that the others will then all be good (or at least close), except track 0, and you can then adjust the track 0 sensor. BUT... if it was me, I wouldn't touch it until I get a real 720k disk (ideally an original software …

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Re: How to: IBM 4865 external 720k floppy drive (Alps DFL413C02B) head alignment

Posted on 2021-04-14, 14:51

by

by InbetweenDays

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You sure you're using single step? Your photo says double step Anyway I'd guess more likely a problem with the stepper based on those results +1 on this Is it seeking ok? Have you used it to successfully format a disk? (Which presumably then doesn't work on another computer) Does it need cleaning?

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