Just printed these they look great and fit well but the posts seems slightly off centered from the top piece, so the posts broke but the case fits tight and holds.
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Apple Techstep I have almost all of the ROMs here and some info!
- Thread starter jajan547
- Start date
I'm still tinkering with the posts and holes. Will share a revision model when I've got it 100%.
Take your time you did a really good job on these I printed these in yellow and it gives the TechStep some color lol.
Thank You!
Update I can open them on my Mac but can't seem to download them?
Thanks forgot about that lol
Here are labels for the carts. Anyone know the best way to reproduce these as durable nice-quality decals? Like maybe print on sticker paper and then laminate?
For the model, I moved the posts in 0.5mm on either side and increased the hole diameter to 2.1mm. It's printing now. Hopefully that'll do the trick.
For the model, I moved the posts in 0.5mm on either side and increased the hole diameter to 2.1mm. It's printing now. Hopefully that'll do the trick.
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I think printing with a package label maker is best and then cutting small matte clear plastic squares and gluing them to the paper.
Awesome work is this the 1MB board? Or what ROM version did you choose to use?
This is the 1MB board with Vol. 4 on an SST39SF010A. I'm going to try the other 4 roms on it later.
Ok so that chip has the same pinout I presume also note CPU test vol 1 and 2 and the scsi tests are all 512k
So far I haven't run into any issue burning the smaller roms to the 1M chips.
Worst case if you double the rom so it fills the chip, that often works. Then even if the highest/unused address line flops you still usually get good data. Or sometime you run into stuff where the last address pin is pulled low in which case burning to a rom without doubling would work. I always double the file when using a larger eprom in place, unless I intent to put a toggle to bank switch, in which case I stack 2 roms into one chop and put a spdt to toggle high/low half of the ROM.
I got some AT27C010-70JU-T EPROM's to burn and installed minipro to program them on a Mac with a TL866II+ programmer. Using the volume 4 binary from this thread, I'm getting this..
Is this okay to ignore or is there perhaps something wrong with the ROM image?
minipro -p AT27C010@PLCC32 -w TechStep_CPU_Tests_VolumeIV_v1.0.bin
Found TL866II+ 04.2.128 (0x280)
VPP=13V, VDD=6.5V, VCC=5V, Pulse=100us
Chip ID OK: 0x1E05
Incorrect file size: 131068 (needed 131072, use -s/S to ignore)Is this okay to ignore or is there perhaps something wrong with the ROM image?
It looks like the dump might be missing four bytes somewhere in the middle, since earlier data seems to be offset by four bytes as well. It's possible it may still work, but I haven't tested that dump since it looked different than my dump.
