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Any interest in 16MB Mac IIFX memory modules?
Posted by: pax on 2020-07-24 02:08:17
I received mine too. Good stuff. I'm not in the same place as my IIfx at the moment so it'll be a while before I can test.
Posted by: hyperneogeo on 2020-07-24 02:40:23
Oh no!

Have you recapped your board ?
Yeah, I did. I was actually fiddling with the cpu crystal when I was doing it. I think I may have shorted something when I turned it on. 
Posted by: MrFahrenheit on 2020-07-24 02:54:41
Yeah, I did. I was actually fiddling with the cpu crystal when I was doing it. I think I may have shorted something when I turned it on. 
Ouch!  That hurts!

There was a IIfx motherboard that recently sold on eBay for a decent price ($40 if I recall).  Would have made a decent parts board.  I've seen IIfx parts show up fairly reasonably from time-to-time.
Posted by: hyperneogeo on 2020-07-24 03:15:06
Yeah I'll get a parts board just in case, or at least try to here. 
Posted by: jeremywork on 2020-07-24 04:32:32
I made the other modules, but my IIFX decided that it didn't want to play anymore. I think the CPU took a hike since I heard a pop in that area. I'm ordering another CPU, should be here next week. 
Ouch, that's a bummer... hopefully it's simple enough to remedy. Your workmanship on this 128MB set looks perfect and it's working flawlessly in my system; the height clearance is just perfect to retain my dual drive tray too! 
Posted by: hyperneogeo on 2020-07-24 05:33:42
Actually I just fixed it. It looks like the trace on the CPU crystal for the output enable literally blew. I fixed the trace and it's perfect now lol. 
Posted by: hyperneogeo on 2020-07-24 07:11:43
Shipped out today/tomorrow: 

AppleTree

Juror22
Posted by: hyperneogeo on 2020-07-24 13:59:54
Ouch, that's a bummer... hopefully it's simple enough to remedy. Your workmanship on this 128MB set looks perfect and it's working flawlessly in my system; the height clearance is just perfect to retain my dual drive tray too! 
I'm glad it's working  🙂  Yeah I saw the 3rd party 16MB ram modules from back in the day and they are quite tall lol. 
Posted by: hyperneogeo on 2020-07-25 05:06:30
So I have 6 sets of 4 left and that's all there's going to be (have a few other ones just in case there's a problem with someones) 
Posted by: cheesestraws on 2020-07-25 05:28:15
I would be up for a set if you're still willing to ship to the UK...
Posted by: hyperneogeo on 2020-07-25 05:54:36
Going out today: 

Cheesestraws

5 left. 
Posted by: Byrd on 2020-07-25 08:39:49
So I have 6 sets of 4 left and that's all there's going to be (have a few other ones just in case there's a problem with someones) 


Love how you're burning through that reel megabytes at a time; thanks for doing this for the community!
Posted by: hyperneogeo on 2020-07-25 11:53:19
Was fiddling with the crystal more on the Mac.

120 mhz Crystal = 60 mhz Mac = Crash on boot with a bus error

110 mhz Crystal = 55 mhz Mac = Works fine, but sound is completely messed up

105 mhz Crystal = 52-53 mhz Mac = Works fine, but sound is kind of messed up

100 mhz Crystal = 50 mhz Mac = Everything seems to work fine.

I have a 50 mhz 030 and 50 mhz FPU installed and I don't really want to test it on a 40 mhz 030 hah.

Btw that's the original ram I made, it's too wide, so I can fit it in, but it's never coming out lol. 
Posted by: IIfx on 2020-07-25 12:12:01
I'm interested in a set of 4 - still possible?
Posted by: trag on 2020-07-25 13:06:35
1.6GB of ram 😛 
Just 12 or 13 sets of 128MB (8 16MB SIMMs)?
Posted by: hyperneogeo on 2020-07-25 13:09:12
 Just 12 or 13 sets of 128MB (8 16MB SIMMs)?

 
Yeah, 12.5 sets of 128MB. You gotta remember, that's 100 simms lol. 
Posted by: trag on 2020-07-25 13:12:06
Yeah, 12.5 sets of 128MB. You gotta remember, that's 100 simms lol. 
Yes.   That's a lot of work.   Great job!
Posted by: hyperneogeo on 2020-07-25 13:14:51
Yes.   That's a lot of work.   Great job!
Thanks 🙂

Posted by: Tekk on 2020-07-25 17:38:24
I’d like to sign up for a 128mb set - trying to get a modern Linux kernel running on my IIfx and more RAM would make it easier!
Posted by: MrFahrenheit on 2020-07-26 05:41:01
For anyone interested in these I thought I would post my opinions of the 128MB kit I received. 
 

Overall, the fit and finish and quality is superb. I literally felt like I was holding and looking at a professionally manufactured product made in a factory. I would never have guessed these were made by hand. 
 

I put them into my first IIfx (which was made in the first batch of released IIfx and is serial number 181) and they snapped in perfectly just like my OEM ram. Could not feel any difference. 
 

My IIfx booted up with zero issues. RAM test takes forever so if you’re not used to that just sit and wait for the black screen for around 30-45 seconds. I didn’t count but it feels like an eternity. 
 

Booted up just fine and ran RAMoMeter RAM test once and it tested positive. Ran Speedometer and some operations were slightly faster. I also ran Norton Speed Test and everything checks out. Will be running RAMoMeter for a continuous test for a few hours just to be certain but my initial thoughts are:  WOW!!  
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