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Apple Techstep I have almost all of the ROMs here and some info!
Posted by: jajan547 on 2022-03-09 22:49:41 Version 2 geometry works. Just need to tweak the press fit dims to better cope with imprecise 3D printing. Regardless, the enclosure did come together and fits into the TechStep just fine. View attachment 39224 View attachment 39225 View attachment 39223 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.
Posted by: olePigeon on 2022-03-10 09:02:17 Jewel Case inserts for TechStep & Supportools. I put the blanks on their own sheet.
Posted by: olePigeon on 2022-03-10 10:33:22 Had a few typos in those disk inserts. Download the fixed ones here: Index of /68k/Floppy
Posted by: elemenoh on 2022-03-10 13:16:16 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. I'm still tinkering with the posts and holes. Will share a revision model when I've got it 100%.
Posted by: jajan547 on 2022-03-10 18:29:56 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.
Posted by: jajan547 on 2022-03-10 18:30:40 Had a few typos in those disk inserts. Download the fixed ones here: Index of /68k/Floppy Thank You!
Posted by: jajan547 on 2022-03-10 18:37:14 Had a few typos in those disk inserts. Download the fixed ones here: Index of /68k/Floppy Update I can open them on my Mac but can't seem to download them?
Posted by: olePigeon on 2022-03-10 19:23:48 @jajan547 Control-click on the file, then hit Save Link As ... Or if you have Adobe Acrobat installed, just click the Download button (looks like a down arrow over a line.)
Posted by: jajan547 on 2022-03-10 19:25:45 @jajan547 Control-click on the file, then hit Save Link As ... Or if you have Adobe Acrobat installed, just click the Download button (looks like a down arrow over a line.) Thanks forgot about that lol
Posted by: elemenoh on 2022-03-11 13:09:54 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.
Posted by: jajan547 on 2022-03-11 18:16:08 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. View attachment 39333 I think printing with a package label maker is best and then cutting small matte clear plastic squares and gluing them to the paper.
Posted by: SuperSVGA on 2022-03-11 19:36:42 Just got one of the new boards assembled. Initial tests look fine.
Posted by: jajan547 on 2022-03-11 20:22:41 Just got one of the new boards assembled. Initial tests look fine. View attachment 39344 Awesome work is this the 1MB board? Or what ROM version did you choose to use?
Posted by: SuperSVGA on 2022-03-11 20:30:26 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.
Posted by: jajan547 on 2022-03-11 20:32:04 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
Posted by: SuperSVGA on 2022-03-11 20:47:27 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.
Posted by: jajan547 on 2022-03-11 20:51:42 Cool I’ll order some and also post results
Posted by: Skate323k137 on 2022-03-12 03:34:39 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.
Posted by: elemenoh on 2022-03-13 14:38:54 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.. `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?
Posted by: SuperSVGA on 2022-03-13 15:17:24 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.. `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.
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