Recent content by max1zzz

My experience with speedometer is that is it very crash happy on faster macs From my testing it tends to be fine on 68020's and slower 68030's, then tends to crash on exit (locking the machine up) on faster 68030's and then is mostly fine on 68040's with just the occasional crash. I haven't...

A good start! :) Further testing will be done tomorrow when I can find where the nice radius video card that was on the IIfx went, my LCD really dosen't like syncing to this random toby card I found.........

Things have been moving a little slowly lately but I'm finally getting things sorted out :) For those that wish to purchase boards: https://68kmla.org/bb/index.php?threads/fs-itxplus-pcbs-kits-and-assembled-boards.50166/ And for those that wish to build their own from scratch...

I will indeed have a few for sale soon :)

Port PCB's arrived (which I totally hadn't forgotten to order....) and the board has been fully tested and works just fine :) I guess now I need to tidy up the schematic, after all I did leave this note in it :ROFLMAO:

I believe CayMac is out of parts, I still have a few more boards waiting to be built up but I am waiting for more MCU's from china. Should be here in the next month or so

Just a short late night post: V1.1 boards have arrived and passed a basic power on test with no bodges :) Only problem I had was nothing to do with the board, I brought a bunch of NOS DRAM IC's and about 1/3 of them seem to be bad. Had me hunting for assembly issues for a while before I just...

Very nicely done! I guess now I have no excuse for relegating that pile of CII boards to donor status :) On you comment on github of not knowing the ASIC pinouts, have a look at the LC II schematic: https://www.macdat.net/files/pdf/apple/schematics/apple/lc_ii.pdf As the pinouts for the main...

As far as I am aware no one makes FPM (or EDO) ram new so it's NOS or reclaimed - it's one of the reasons I went with 1Mx4's to begin with, it's very easy to find simms that the chips can be "borrowed" from

😅 I was only slightly doubting my own maths there :) Off the top of my head I think it's about 2/3rds the size in both dimensions but I'll double check that later

I'm not quite following? 8 1M x 4 bit chips makes 4MB

They are 1Mx4 ones, essentially the equivalent of 4 2 chip simms, I do also have some 1M x 16 chips on order to experiment with as it would allow just two chips to be used

Revised boards have been sent off to JLC :)