First post, by arnovdheiden
I'm Arno van der Heiden from Netherlands, and I'm working on a retro pc build using a Asus P55TVP4 Socket 7 mainboard and an Pentium 1 233 mmx processor. I combine a S3 Virge DX and a Voodoo 1 for graphics, and a Promise Sata300 controller for an SSD for storage. A Vibra 16 sound card with OPL chip for sound, and a Intel Pro 1000 GT for networking. All together in a nice old Escom AT housing.
Sadly the battery of the RTC chip died after 20+ years, so i ordered a new one on ebay. I am okayish (not that great) with soldering, so I hope to be able to solder off the old chip and solder on the new chip. I was reading about the low voltage mobile Pentium MMX processors. The 266MMX and even the 300MMX. They have a clock multiplier of 4 and 4,5 on a 66MHz bus.
My current 233MMX has a multiplier interpretation that translate sa multiplier of 1,5 to 3,5
I have 2 questions maybe some of you know the answer.
1. is replacing the RTC chip as simple as it sounds? Just off the old one and on the new one. Isn't any special activation needed to get the new chip to work?
2. does the tillamook 266MMX and 300MMX have the same multiplier interpretation as the 233MMX? So 2.0 becomes 4.0 and 2.5 becomes 4,5? I wonder, because the 300 would be a nice upgrade, if available as PGA.
Thank you so much for reading this, and thinking along.
Arno van der Heiden