TI-99/4A in the 21st century

TI-99 Blog

finding a compatible compact flash card

Posted on November 8, 2010 at 6:43 AM

The nanoPEB, built by Jaime Malilong, comes with a 32 MB compact flash card.

Well, he has tested the nanoPEB with SANDISK Compact Flash cards up to the size of 1024 MB = 1 GB.


Since we are in the year 2010 now, it's really hard to get your hands on such small cards.


I have bought a Kingston 4 GB CF Card, because that was the smallest card in the electronic shop avaiable.

The nanoPEB & TI booted up correct, I executed the format and mount commands but saving an item always led to an I/O Error 64 (which means no free disk space). My guess is, that the controller and or the software is unable to cope with everything greater than 2 GB size. My guess is some addressing issue.


Next I bought a Transcend 1 GB CF Card. Thats the size Jaime successfully tested his device with. If I insert this card, the TI won't even boot up (no title screen).


On the computer side I tried everything inside the "Disk Management console" and in the command program "diskpart.exe". I tried forcing FAT instead of FAT32, I tried shrinking the size of the partition.


I will now try to find a Sandisk 1 GB Compact Flash Card and will keep you up to date.

Categories: nanoPEB, Instructions

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Reply Zaphod
4:42 PM on January 9, 2011 
Did you ever find a working CF card? I tried an old Lexar 128MB card I had laying around and it did not work I/O Error 64, so the issue(s) is not just size.
Reply Klaus
9:13 AM on January 10, 2011 
Yes, after trying out several incompatible ones I finally found a Toshiba 1 GB CF (F II) working:
I have placed a blog entry back then:
If you don't want any trouble get a Sandisk with 2 gigabytes at most.