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Toshiba T5200 mods and upgrades

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Reply 560 of 562, by Eirikr

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my03 wrote on 2024-10-09, 19:25:
Eirikr wrote on 2024-09-24, 21:01:
Long time lurker; first time poster and friend of garagemadlad. TBH I honestly didn't think he was gonna make an account; I feel […]
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Long time lurker; first time poster and friend of garagemadlad. TBH I honestly didn't think he was gonna make an account; I feel like I'm more hyped about his machine than he is! hehe.

Any luck with the TI TI486SXL2-G66-GA in the T5200, or any challenges to be aware of? Any ways to get some more clock speed? It seems like the cache + 486 will help much more with emulation; but might leave some SNES emulators wanting.

There is also this thread for a PGA168 to PGA132 custom interposer
Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Has anyone used this interposer with any further, even more LUDICROUS SPEED CPU upgrades in their T5200s?!

So I guess I shall be going over there to ask there about it working with PGA-168 CPUs like: 5x86 chips from AMD, Cyrix, Cyrix 6x86 (M1), IBM/Cyrix 6x86L, Pentium Overdrive

Following this with great interest. I went with the CX486DRx2 upgrade and it made some significant change to performance, but I would be all ears in learning if anyone went "hyper-speed" with a 2/66 unit with a custom PCB 😀

After a 2.5 month hiatus due to hospitalizations and such I’m finally venturing back into the world outside my immediate survival needs.

I do want to follow up with @garagemadlad to see what sort of upgrades (especially CPU) he has done and go from there.

Reply 561 of 562, by fool

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Smeltbeard wrote on 2024-11-21, 17:38:
fool wrote on 2022-12-30, 10:35:

Someone interested in 2MB and 8MB 40pin SIMM memory kits? Nothing is ready yet. Just scouting before I make any PWB & chip orders because these are not cheap. Also have to repair my test bench first, no RAMs without it.

fool - Do you still have any 40 pin SIMM boards or kits?

Also wanted to mentioned I saw a new batch of 3inONEder's are available https://conventionalmemories.com/wiki_cm/3inO … shiba_portables

I should have two sets, but those are development phase boards and visually not very good. I designed new version, but yet build any. I would build some just for fun, but these memory chips are quite pricey. Let see, maybe I will get some inspiration 😀

Toshiba T8500 desktop
SAM/CS9233 Wavetable Synthesizer daughterboard
Coming: 40-pin 8MB SIMM kit, CS4232 ISA wavetable sound card

Reply 562 of 562, by 0xDEADBEEF

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Hey I have T3200SX and I replaced the BIOS with modded Award /639K with xtide. During boot XTIDE detects 40mb conner at 1f0 but then doesnt boot from it and tries to boot from floppy only. When I booted dos 6.22 from floppy fdisk says no fixed drive detected.
Any ideas?