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Im wondering if anyone knows how difficult it would be to modify system software installers to change what is installed and to add things for example there are some system file modifications that people like to use and also essential things like the 2020 control panel for dealing with modern...

tip if you rename your system folders to say 'System 8.1 Folder' and system 'System 7.5.5 Folder' or any other name you want really, then you can use system picker to select system folder to boot from while keeping them on the same hdd partition. https://macintoshgarden.org/apps/system-picker...

i designed an ADB switchbox that uses relays for that 'sound' when you switch machines, but i never got around to laying out a pcb for it. theres some cool scsi stuff like networking and sd hdd's but apart from the bluescsi v1.x i think most use smt parts. its probably not in the scope or what...

not sure if this info is helpful or not but i have a 630DOS myself, i could never get PC Setup running on 8.1 back when i tried it about a year or so ago. i tried 1.64 and 2.17f. I have an industrial CF card made bny sandisk as my main drive, PC setup has always worked on there with 7.5.5 and...

@bigmessowires im pretty sure my info above came from reading your blog posts on a Apple disk controller you were working on at some stage. Considering it was a few years ago Im glad I at least remembered half correctly. After looking at your link above, which is great info too btw, I’m pretty...

It’s likely due to pin 9 originally being used to provide -12v during the Apple II days but during mac development for whatever reason they choose to no longer connect that pin on the logic board. In fact I think latter floppy drives themselves had that pin connected to +5v. So I probably...

for the VRAM, if you want good sockets, get what’s known commonly as ‘machined pin sockets’ or ‘Turned pin sockets’ im not sure where you are located but the link below is an example of what you want, you don’t have to use the same brand or anything but at least you can get all the socket type...

you Could just add large enough to easily solder pads on the 2x10 pin connector side of the pcb. Then if someone only wants to use HD20/DCD they don’t need to worry about it but if they want floppy support then can solder the extra connections?

This is this project on GitHub https://github.com/rdolbeau/NuBusFPGA its using a FPGA to get video output via hdmi, it apparently can do sound, has a RAM disk and mentions wanting to add networking support etc… might Be a good place to start or perhaps build upon/get ideas from in regards to...

Oh ok, sorry I must have missed the need to solder to a carrier board. Just wondering and sorry if I missed it if you’ve already explained it but how come you need to solder the chip onto a pga adaptor rather then just use a socket, at least for prototype verification? Is it to do with clearance...

may even be worth just replacing UC6 with a new chip, those 74F253’s are pretty cheap to buy. also do keep in mind that if there was any capacitor leakage around any of those IC’s best practice it to actually remove and clean under them. Also one of then pins on UC6 looks a little suspect so...

@Trash80toHP_Mini do you mean a 84pin Through hole PLCC socket...

Thank you. it makes much more sense to me now whats going on, I appreciate you taking the time to explain it to me

so im guessing then that if the new font manger isnt detected by whatever the pre system 6 gestalt equivelant is, it falls back to the old version and loads ID0 font from the system file?

i guess my memory is a fair bit off here, thanks for clarifying though, as its had me quite interested since i saw this question posted.. i do wonder whats going on with the system disk though, specifically how it loads that 'Cartoon' font on the mac 128k but loads chicago on the mac plus...

it looks a bit like the old Xerox smalltalk script font.. im not sure when apple changed over to Chicago but early prototype macs used that smalltalk font and im pretty sure it was when then switched to a 128kb ROM in the mac 512 (or maybe the 512ke ??) and rewrote the font manger and updated...

forgot to mention too that the se/30 really needs an internal scsi drive to be properly terminated and if you have an external scsi chain make sure the last psychical device is terminated too, otherwise you will get bus errors. system 7.5.x is much more tightly controlled then 7.0.1 was with the...

try booting off a system 7.0.1 install or floppy disc id be interested to see if if boots up or fails differently. for some reason the 53C80 is coming to my mind as a possible culprit

personally the se/30 is my favorite mac from the whole 68k era, probably why i have more then one of them.. im sure most of the people on here who have an se/30 don't use it for its raw performance but do so because of nostalgia, or maybe it was the machine they dreamed of owning back in that...

at the very least some verbose feedback during compile to let the user know. im not really sure how to raise a ticket in github, but ill look into doing that