Re: Looking for identity of this Motherboard

Posted on 2023-06-16, 09:04

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

an amd k6 can't be used without extra modifications to the mainboard since it requires a lower cpu core voltage. your best bet for this is a pentium 1 cpu without mmx, Intel P54C K6 Model 6 CPUs will be fine at 3.3V. Their power draw may become an issue for some mainboards though. Up until the 233 …

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Re: serial mouse not detected on a 386 motherboard

Posted on 2023-06-16, 07:55

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

DEBUG.EXE -d 40:0 l8 returns 03 E8 00 00 00 00 00 00 (juuust in case) I'm a bit perplexed by this. since according to an internet snippet 1st serial port found | 2nd serial port found | | 3rd serial port found | | | 4th serial port found | | | | v v v v 0040:0000 F8 03 F8 02 E8 02 00 00-78 03 BC 03 …

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Re: serial mouse not detected on a 386 motherboard

Posted on 2023-06-16, 07:05

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

which serial port is the mouse attached to ?

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Re: Looking for identity of this Motherboard

Posted on 2023-06-16, 05:57

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

an amd k6 can't be used without extra modifications to the mainboard since it requires a lower cpu core voltage. your best bet for this is a pentium 1 cpu without mmx, Intel P54C

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Re: Compaq armada e500 ram type pc100/pc133

Posted on 2023-06-15, 14:34

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

googling that gives a module with 8 chips. Best case, it works. Worst case it doesn't. Likely case, it only works at half capacity.

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Re: Looking for identity of this Motherboard

Posted on 2023-06-15, 13:33

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

google only found one reference for the Rectron RT-512X I only now noticed the text between the isa slots.

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Re: Looking for identity of this Motherboard

Posted on 2023-06-15, 13:03

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

someone thinks it may be from RECTRON. as for booting I am waiting for ram for the board, but what CPU will this support? Intel? Amd? also, you said: " your chipset is an Intel 430 fx." I would like to understand how/where you saw this. its the number on one of the big chips on the board …

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Re: Looking for identity of this Motherboard

Posted on 2023-06-15, 12:29

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

try looking here https://theretroweb.com/motherboards/search/ It is a socket 7 mainboard only. that socket you describe as slot 1 is actually for a Cache module. your chipset is an intel 430 fx. edit: couldn't find it there myself. if you can boot it and post the bios id code here, the manufacturer …

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Re: Compaq armada e500 ram type pc100/pc133

Posted on 2023-06-15, 12:17

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If I recall correcly, tried looking but couldn't find it immediatly by googling, the compaq armada series uses an intel 440BX chipset. That chipset has a limitation on the maximum size (bits) of each memory chip supported. Not all such modules will work. memory modules with 4 or 8 chips for the …

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Re: Adding mouse port to my build

Posted on 2023-06-13, 15:03

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK, so maybe this? https://www.amazon.de/-/en/PremiumCord-Extension-Cable-PS-Keyboard/dp/B07TMQHY3V/ref=sr_1_1?crid=38C97SKE1WNJB&keywords=ps%2F2+extension&qid=1686666999&sprefix=ps%2F2+extension%2Caps%2C124&sr=8-1 and then i'll cut off the male end and I should be left with some amount of wires. …

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Re: 286 system, joysitck buttons are constantly pressed down.

Posted on 2023-06-13, 14:52

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by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

the timer ICs and their associated circuitry have NOTHING to do with the button inputs, only the axis a) please don't scream, it's unpolite. b) the diagnosis program said the axis test failed. So it's not wrong investigating this further. Maybe the axis can be made work and the gameport can be …

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Re: 286 system, joysitck buttons are constantly pressed down.

Posted on 2023-06-13, 14:50

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So you think the 556 chip is malfunction? I can try desolder it completely and see what happens. After that I will try 74LS367 chip too. I am really not expert at this kind of things but at least I know how to solder things. No, I do not think that, that bad suggestion came from jo22. I think that …

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Re: Adding mouse port to my build

Posted on 2023-06-13, 05:10

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

maxtherabbit, disruptor. the problem, I guess, is not having a ps2 connector & bracket and not finding one for sale nearby. didn't you read that ?

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Re: 286 system, joysitck buttons are constantly pressed down.

Posted on 2023-06-13, 04:57

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Jo22 there is no mention of the X Y axis fluctuating wildly, only button 3 & 4 not working, which are likely not even connected to the gameport, as well as the XY axis for a second joystick. ffs

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Re: Amstrad PC1640 XT class upgrade

Posted on 2023-06-12, 20:28

by

by weedeewee

in Marvin \ System Specs

in Marvin \ System Specs

I've got one as well. No idea if it's working, had an mfm or rll harddrive built in with some home made iron brackets, and the fan underneath has a loose rotor. It's one of those projects that will happen... someday. I hope to add an emulated xt-ide drive to it. one can always fantasize :-) added to …

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Re: 286 system, joysitck buttons are constantly pressed down.

Posted on 2023-06-12, 19:53

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I seriously doubt that capacitors have anything to do with it in this case. There's a photo of the card. it only shows one electrolytic and a bunch of ceramics. While I've heard and experienced smd ceramics go short, even open circuit. Those old ceramic disc capacitors would have even more visible …

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Re: Using the wavetable header as Line-In

Posted on 2023-06-12, 18:46

by

by weedeewee

in Marvin \ Sound

in Marvin \ Sound

Interesting. I guess Dreamblaster should know this. dreamblaster wrote on 2023-03-04, 11:35: edit: from the sam2655 datasheet One single-ended stereo line or headphone out Seems like the dac has a max output voltage of 2.85V ( 0.85 * VA33 )

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Re: Motherboard refuses to see other IDE hard drive

Posted on 2023-06-12, 15:17

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sata-pata adapters are usually hard wired for master, they might not even support slave drive on same cable. IDE master/slave actually requires some logic in drive controllers https://www.os2museum.com/wp/the-dual-drive-ide-hell/ and wasnt standardized for a long time (something ridiculous like ~ …

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Re: Bought these (retro) hardware today

Posted on 2023-06-12, 14:48

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by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got this A-Trend ATC-5300 board with bulged cap and missing bios chip, when I received the board, the clock gen crystal was also chopped off, typical recycler drooling over crystals and dip ICs. I got bunch of 14.318Mhz crystals but all of my eeprom chips are plcc32, so I'm gonna make a plcc32 to …

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Re: Motherboard refuses to see other IDE hard drive

Posted on 2023-06-12, 08:04

by

by weedeewee

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yep, it's likely the adapter that's causing you problems. Some work fine in dual drive setups, others fail. It's annoying. enjoy & have fun !

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