VOGONS


First post, by Sphere478

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edit s1563 and s1562 on page 4

I have one of these boards a (s1564D) and it’s just the greatest thing since sliced bread. So stable, just works so well! Really love it

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Well, the other day I was browsing around and came across a good deal on a S1564 so I bought another haha except this one is a s1564S the single socket version! Bummer…

But,

With some advice and help from the wonderful guys on this forum and on the discord server I’ve been preparing to convert it to a s1564D

This will be the build log for the conversion

Here are the before photos:

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Last edited by Sphere478 on 2022-02-18, 08:52. Edited 9 times in total.

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 1 of 78, by Sphere478

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The first thing I’ve done is flash the latest jan bios to the board for the S1564D using my chip programmer. http://web.inter.nl.net/hcc/J.Steunebrink/k6plus.htm

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Pretty easy stuff,

Next I ordered a new RTC from monotech

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Last edited by Sphere478 on 2021-12-23, 06:38. Edited 1 time in total.

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 2 of 78, by Sphere478

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Now I need to install the APIC

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Luckily, this board doesn’t really seem to be missing anything other than the APIC, the socket and possibly a jumper or two

I used a hot air gun and some of this cool soldering paste

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First I dabbed a little solder on the pads of the apic then lined it up on the pads and pushed down and went around it with the hot air gun two pics because it looks weird in the first, but it’s all good

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SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 3 of 78, by Sphere478

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Next I have to add the single/dual cpu selector jumper

Not really sure of the purpose of this jumper because my dual works fine with it in the dual position even with a single processor.

Might be responsible for switching on the use of the apic vs using the internal apic in the processor which is probably why it works on a single. Idk I’m just guessing.

Might be kinda neat to see if the external APIC or internal performs faster in single chip mode with a K6

Here you can see the new jumper all installed and ready to go.

(Black one)

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SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 4 of 78, by Sphere478

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Well that’s enough for tonight, unless one of you keen eyed electronic wizards sees a difference I missed I think the only thing left is the socket I even fixed the missing I/O ground tab on the kb port

I’m still waiting on the rtc and a atx to AT adapter so no big hurry.

I may even just leave it at this stage for a while.
I was hoping to find a exact match for the socket that’s in it but the AMP one that I ordered is a little different. I kinda want it to look original. So if anyone has a busted tyan laying around lemme know.

The board so far as it knows is a dual now, just no socket, I don’t have a pair of 233s for it, just 200s might just run a k6 3+ 400 in it for a while and compare to my dual 233

Power leap and cyrix just because it looks cool.

Attachments

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 5 of 78, by luckybob

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neat! i think you might need to set some 0-ohm smd resistors near the apic chip.

i think i have one of these boards, but i have NO idea where it is atm.

It is a mistake to think you can solve any major problems just with potatoes.

Reply 7 of 78, by Sphere478

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luckybob wrote on 2021-12-23, 08:33:

neat! i think you might need to set some 0-ohm smd resistors near the apic chip.

i think i have one of these boards, but i have NO idea where it is atm.

I’m not seeing a difference between the two boards in that area now

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 8 of 78, by Sphere478

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chinny22 wrote on 2021-12-23, 11:08:

More is always better! this is good work 😀

Thx!

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 9 of 78, by Sphere478

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While I’m at it 512k is the most cache this board can take right?

Does this board use dual 8k tag chips?

And if anyone has any ideas for transplanting a faster clock gen into it I’m all ears.
New clock gen for tyan s1564d

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 10 of 78, by Sphere478

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Well, I got bored

Went ahead and just used the AMP socket.

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I did notice this: (thx lucky bob) but haven’t done anything about it yet

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It seems to post just fine but the RTC is being an issue.

I tried to start windows setup but it needs sata drivers, screw it. Gonna throw ubuntu on it and see what happens

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Last edited by Sphere478 on 2022-02-03, 09:17. Edited 1 time in total.

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 11 of 78, by Sphere478

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🧐 It appears that I have two cpus at my disposal

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SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 12 of 78, by Warlord

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Interesting to see that the single socket variant wasn't more crippled than the dual socket board. It would of been a good value back in the day. The dual socket board would of been a rip off for the consumer if you really needed dual socket back then. Since the missing components really isn't expensive.

Sphere478 wrote on 2021-12-23, 15:05:

I did notice this: but haven’t done anything about it yet67170689-57EE-4055-8E22-20B3BD17B66A.jpeg92BF016D-3AC8-4C16-91BF-D41CC4DA1D55.jpeg

This looks to me more like a pcb revision and less like a revision related to dual or single socket.

Next step is solder on more L2 Cache?

Reply 13 of 78, by Sphere478

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Warlord wrote on 2021-12-23, 22:08:
Interesting to see that the single socket variant wasn't more crippled than the dual socket board. It would of been a good value […]
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Interesting to see that the single socket variant wasn't more crippled than the dual socket board. It would of been a good value back in the day. The dual socket board would of been a rip off for the consumer if you really needed dual socket back then. Since the missing components really isn't expensive.

Sphere478 wrote on 2021-12-23, 15:05:

I did notice this: but haven’t done anything about it yet67170689-57EE-4055-8E22-20B3BD17B66A.jpeg92BF016D-3AC8-4C16-91BF-D41CC4DA1D55.jpeg

This looks to me more like a pcb revision and less like a revision related to dual or single socket.

Next step is solder on more L2 Cache?

I’m not sure…🤔 I don’t even know if that even applies to the APIC at all…

But it seems stable.

Well, that’s what I’m trying to figure out…

From what I can research it suggests that this board uses two 8 bit tag chips (so even more than your typical board which is cool) but everything I see says hx is max 512k cache I need to talk to someone around here that knows more about cache and see what they think I would love to upgrade to more cache!

I’ll run some more tests eventually but probably going to re focus on my p5a for a while.

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 14 of 78, by Sphere478

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Memtest is saying 1 core.. 🤔 (edit: memtest problem not board problem)

Trying windows xp install

luckybob wrote on 2021-12-23, 08:33:

neat! i think you might need to set some 0-ohm smd resistors near the apic chip.

i think i have one of these boards, but i have NO idea where it is atm.

It’s seeming like you are correct.

Just make em exactly like the dual right?🤔💁‍♂️

Last edited by Sphere478 on 2022-02-03, 09:19. Edited 1 time in total.

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 15 of 78, by shamino

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Do you have the Intel datasheet for the 430HX? I've attached it just in case not.

Skimming the info they seem clear that 512KB is the limit for cache size, but it would take someone with more knowledge to say whether any "cheating" is possible.
I do wonder if having dual CPUs changes the rules any, but probably not since if they had separate cache per CPU then there'd be another coherency issue to deal with.

Page 21 describes programming a register that controls the cache setup. Secondary Cache Size is a 2 bit value with options of No Cache, 256KB, 512KB, and "Reserved". I wonder if there's any chance the "Reserved" setting would do anything interesting.
Also see page 34-35, where they talk in more detail about cache sizes and the Tag RAM requirements per cacheable range.
Unfortunately no hint of going beyond 512KB and 512MB cacheable range.

I'm guessing the BIOS normally programs the setup for this stuff so somebody who has experience with BIOSes might know more about it.

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Reply 16 of 78, by Sphere478

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XP says two cores…?

Thoughts?

Anyone with more knowledge on the apic have any ideas if those resistors might be why memtest doesn’t detect two cores? (Edit: memtest was the problem, not the board)

What are they for? Hesitant to modify them without more understanding dual processor seems to be working in linux, post, and windows XP

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Last edited by Sphere478 on 2022-02-03, 09:21. Edited 2 times in total.

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of

Reply 17 of 78, by luckybob

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I just finished a project and i saw my dual tyan board and it was easy to access!

My board https://imgur.com/a/qEd0d1S

My board is a s1562, but the numbers on the resistors are easy to read. As I recall, the chips are all identical.

It is a mistake to think you can solve any major problems just with potatoes.

Reply 18 of 78, by majestyk

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512KB of cache combined with 2 TAG chips (8 bit each) are sufficient to cache all 512 MB of RAM.
So it would be pointless to extend L2 cache any further beyond 512 KB as long as the system does not correctly and fully address more than 512 MB of RAM.

Reply 19 of 78, by Sphere478

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majestyk wrote on 2021-12-24, 08:25:

512KB of cache combined with 2 TAG chips (8 bit each) are sufficient to cache all 512 MB of RAM.
So it would be pointless to extend L2 cache any further beyond 512 KB as long as the system does not correctly and fully address more than 512 MB of RAM.

Okay so that begs the question, if I add more cache can I install 128mb sticks in my remaining 4 simm slots?

luckybob wrote on 2021-12-24, 07:32:

I just finished a project and i saw my dual tyan board and it was easy to access!

My board https://imgur.com/a/qEd0d1S

My board is a s1562, but the numbers on the resistors are easy to read. As I recall, the chips are all identical.

I have two of these boards one is a dual from tyan and this one was a single.

It’s interesting your board seems to have yet a third configuration for those resistors..

Sent you a pm btw

Last edited by Sphere478 on 2021-12-24, 08:55. Edited 1 time in total.

SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod
-
Tyan S1564S to S1564D single to dual processor conversion (also s1563 and s1562)
-
Socket 5/7/SS7 (Motherboard) Tweaker
-
The coolest socket 7 motherboard that you’ve never heard of