Re: VTECH LASER 8086 XT/3 TURBO 10MHZ SYSTEM

Posted on 2021-08-06, 11:06

by

by Robin4

in Marvin \ System Specs

in Marvin \ System Specs

Is the address 00000, 04 actually in the memory chips it self.. Or has something to do with the bios rom? If it detects only 64KB in total memory chips.. How much chips do i need to getting 64K (the chips that are installed are all 256Kx1.) How can i see where the first chip is starting on the …

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Re: VTECH LASER 8086 XT/3 TURBO 10MHZ SYSTEM

Posted on 2021-08-06, 03:01

by

by Robin4

in Marvin \ System Specs

in Marvin \ System Specs

No i dont get the base 64K ram error. It only says the total system memory is just 64K I have got memory testers here. But they are also not going to help me out. (because they dont show me an error.) I had already problems with the older memory, so thats why i thought, then replace everything. Its …

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Re: VTECH LASER 8086 XT/3 TURBO 10MHZ SYSTEM

Posted on 2021-08-06, 01:27

by

by Robin4

in Marvin \ System Specs

in Marvin \ System Specs

The system is like running again.. But now i have some problems with it again. It boots up normally.. 1. It says that the memory size is only 64KB, which i think is strange. I had installed new memory chips on the board. And it should let me see 512KB as total memory. (that is just to see if the …

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Re: VTECH LASER 8086 XT/3 TURBO 10MHZ SYSTEM

Posted on 2021-08-06, 01:22

by

by Robin4

in Marvin \ System Specs

in Marvin \ System Specs

How did you go with this? I just found I had one of these in the shed. It has a TSENG LABS ET3000 in it with VGA! I got it to post but need to find a 360k drive for it :( - turns out it just wont recognise a 1.2mb drive boo. They came with either two 360k or one 360k and one 720k floppy drive. If …

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Re: VTECH LASER 8086 XT/3 TURBO 10MHZ SYSTEM

Posted on 2021-08-06, 01:19

by

by Robin4

in Marvin \ System Specs

in Marvin \ System Specs

Horun wrote on 2021-08-01, 02:01: They are very nice XT machines ! Hope you get it all working good ! Yes iam trying and see what i could do.

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Re: What retro activity did you get up to today?

Posted on 2021-08-06, 01:17

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Iam waiting on my replacement parts for my laser XT/3 8086 10Mhz machine. Ordered two new SN74LS245N chips (i had the previous chips removed for diagnostic the machine) but i have a lot parts laying around.. And also move parts from heap to table, i have lost my eyes on finding the chips again. …

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Re: What do you regret throwing out?

Posted on 2021-07-31, 22:41

by

by Robin4

in Milliways

in Milliways

In the 90 i had a LEO XT computer. Sold it because i hadnt any use for it anymore.. And didnt know how to install a harddisk on a XT class machine. Further more i didnt had any regret of other things that went away.. But if i know sooner i had kept some CRT monitor which are nowdays are hard to come …

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Re: Replaced Dallas DS12887A , now can't boot - help.

Posted on 2021-07-29, 22:30

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did you also watched that arrow on the left bottom is PIN 1. Same as the dot on your old RTC. So dont turn the RTC around. Or you might damage it.

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Re: What retro activity did you get up to today?

Posted on 2021-07-29, 22:21

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Iam waiting on my replacement parts for my laser XT/3 8086 10Mhz machine. Ordered two new SN74LS245N chips (i had the previous chips removed for diagnostic the machine) but i have a lot parts laying around.. And also move parts from heap to table, i have lost my eyes on finding the chips again. …

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Re: Promise DC200 BIOS/firmware?

Posted on 2021-07-29, 22:09

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

please make a photo of your card so we can see the situation you are now in.

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Re: Promise DC200 BIOS/firmware?

Posted on 2021-07-28, 00:55

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sometimes its good to remove the rom chips.. And cleaning the IC socket underneath it with deoxit d5. And place the roms back. I had a card where the rom didnt work.. But after cleaning it was working again.

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Re: I need help identifying an I/O card

Posted on 2021-07-28, 00:45

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Its an Longshine controller card LCS - xxxx

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Re: Need help finding drivers

Posted on 2021-07-28, 00:40

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe this could help: https://www.allied-telesis.co.jp/support/nic/ … top.html#laisa2 I have added the file which maybe can help you further.

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Re: Need help finding drivers

Posted on 2021-07-28, 00:33

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.yuyiplc.com/?lang=en&unit=product … 1127#mainImage2 Centrecom ?? Japanese website: https://www.allied-telesis.co.jp/products/lis … a2/catalog.html

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Re: VTECH LASER 8086 XT/3 TURBO 10MHZ SYSTEM

Posted on 2021-07-26, 01:33

by

by Robin4

in Marvin \ System Specs

in Marvin \ System Specs

Few days ago, i started again with this machine. Its already some years ago that the motherboard wont recognize all my floppy controller cards any more. After starting up the system seems to be hanging. And i had also some problems with the memory chips i added to the motherboard, to make any use of …

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Re: Newly made ISA CL-GD5434

Posted on 2021-03-07, 04:08

by

by Robin4

in Marvin \ Video

in Marvin \ Video

TOP, Thank you..

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Re: Video BIOS wanted, STB Powergraph 64 Video VLB

Posted on 2021-02-07, 22:01

by

by Robin4

in Marvin \ Video

in Marvin \ Video

I think he made it self. Only the difference there is the V+ version of the S3 64 chip.

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Re: Adding 3.3V regulator to a cost reduced 486 motherboard

Posted on 2021-02-07, 20:07

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi Douglar I found the info here: https://www.elhvb.com/webhq/models/486vlb3/sis486ge.html The model number matches and I had no issues identifying all the jumpers. I hope the regulator is all it needs. Again, what puzzles me is that the PCB says 5V/3.3V but then the 3.3 regulator is missing. …

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Re: any information on this ISA card?

Posted on 2021-02-04, 16:49

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So its actually not a stand alone ISA card.. But a part of a hardcard?

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any information on this ISA card?

Posted on 2021-02-04, 16:21

by

by Robin4

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Has anyone maybe have information or manuals, or documents about this isa card?

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