ph4nt0m: Year 2000 RTC Bug Fix ISA Cards
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ph4nt0m



Joined: 01 Jan 2018
Posts: 812
Location: Europe

PostPosted: Mon Aug 19, 2019 9:08 am    Post subject: ph4nt0m: Year 2000 RTC Bug Fix ISA Cards Reply with quote

This 8-bit ISA card fixes incorrect year reported by many old BIOSes after 1999. No drivers required. There is a ROM image executed while booting up. It installs an interrupt handler that intercepts software requests to the RTC, makes a request on its own, corrects the year and forwards the response to the software. In other words, RTC years 1900 to 1980 are corrected to make them look 2000 to 2080.

OEM version with no metal bracket, box or manual. Made in Ukraine in 1999. Very good build quality with gold plating. The manufacturer has said these work in 80286 and newer machines, but I think 8086/8088 should be fine, too.

The chip under the sticker is a 27C512 OTP EPROM, though the actual ROM image size is under 4Kb. If you replace this chip with a socketed erasable one, you can use the card for ROM testing and development without touching your actual BIOS.

$12 each

Worldwide postage $10 for the 1st card + $2 each additional







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Last edited by ph4nt0m on Sat Apr 01, 2023 10:31 pm; edited 8 times in total
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debs3759



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PostPosted: Mon Aug 19, 2019 9:44 am    Post subject: Reply with quote

80386DX @ 96MHz? I would buy that Smile

I will take a pair please Smile

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ph4nt0m



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PostPosted: Mon Aug 19, 2019 9:59 am    Post subject: Reply with quote

debs3759 wrote:
80386DX @ 96MHz? I would buy that Smile

I will take a pair please Smile

That's my overclocked NexGen Nx586-P80 Smile

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tunder10



Joined: 08 Nov 2006
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PostPosted: Mon Aug 19, 2019 10:01 am    Post subject: Reply with quote

one for me, thanks
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xhoba



Joined: 20 Apr 2009
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PostPosted: Mon Aug 19, 2019 1:01 pm    Post subject: Reply with quote

One for me please.
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invasio



Joined: 11 Sep 2017
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PostPosted: Tue Aug 20, 2019 2:15 am    Post subject: Reply with quote

I will take one!
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ph4nt0m



Joined: 01 Jan 2018
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PostPosted: Fri Aug 23, 2019 2:03 am    Post subject: Reply with quote

7 cards left

$3 postage to the AVICC for one card or $4 for two cards

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vmr_



Joined: 01 Sep 2018
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PostPosted: Tue Aug 27, 2019 8:07 am    Post subject: Reply with quote

one for me please, postage to AVICC
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nyxel



Joined: 06 Sep 2019
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PostPosted: Sat Sep 07, 2019 3:40 am    Post subject: Reply with quote

One for me with direct delivery, please.
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WFS2005



Joined: 13 Mar 2007
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PostPosted: Sat Sep 07, 2019 3:56 am    Post subject: Reply with quote

I am sorry. I can't see the picture.
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ph4nt0m



Joined: 01 Jan 2018
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PostPosted: Sat Sep 07, 2019 4:10 am    Post subject: Reply with quote

WFS2005 wrote:
I am sorry. I can't see the picture.

I upload images to Imgur and the Chinese state firewall blocks it.

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WFS2005



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PostPosted: Sat Sep 07, 2019 4:56 am    Post subject: Reply with quote

Thanks
Two for me please, postage to AVICC

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ph4nt0m



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PostPosted: Mon Sep 09, 2019 11:19 am    Post subject: Reply with quote

Sent 6 cards to the AVICC and 1 card directly to nyxel

Found 5 more cards.

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ph4nt0m



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PostPosted: Tue Jun 23, 2020 6:17 pm    Post subject: Reply with quote

Still have some of these. $4 postage to the AVICC or $9 direct registered worldwide for one boxed card.
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Turboman



Joined: 27 Feb 2015
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PostPosted: Tue Jun 23, 2020 8:21 pm    Post subject: Reply with quote

I'll take 2 please.
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