Mac OS 9 Discussion > Hardware

Alex Hixon's Jamport G4 serial adapter for Mac G4 now available on Github

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blaylok:
I have been in contact with Alex Hixon and he has agreed to release his designs from Jamport G4 serial adapter for Macintosh g4 on Github

https://github.com/ahixon/jamport/tree/main

Unfortunately currently above my skill level to produce, but please put my name down at the top of the list anyone here that might decide to make some of these...

Big thanks to Alex for releasing his designs for free

ssp3:
If you're in contact with him, ask whether he has figured out if Mac Mini G4 has the connector/pads where something similar could be attached. I PMed him a while ago but got no answer.

Knezzen:
Cool! I made a news post about it here. Thanks for the heads up! :)

chrisNova777:
good thing.. i remember he was responsive when i first noticed the jamport product but then he went MIA and stopped responding to emails... never got a chance to see a jamport in real life because he never came thru with the product.

its 2024 - too bad they dont make "replicators" like on star trek TNG

stealth port on an original mac mini -  that would be cool but you could easily save alot of hassle + just grab any emagic AMT8 or any MOTU / Roland / Yamaha / Steinberg USB midi device but that wouldnt be as braggable as having an original mac mini with a serial port lol

https://support.apple.com/en-ca/112579 it says the original mac mini did have an internal 56K V.92modem... but only had a telephone port on the back?

chrisNova777:


well thats good news, judging by the look of this image, the modem connector looks like it should be compatible with serial adapters, has anyone got a G4 mac mini with a stealth port?

it looks like it should be compatible with a Griffin G4port... or a stealthport..but are there screws in any of the spots for mounting it? i guess u could just use double sided tape to secure it in place .. but how would u mount the port inside the mac mini? hardcore modders could prob dremel out the telephone connection and put the din8 rs422 connector in its place??


--- Quote ---The PCI-based Power Macintosh Gx models -- the "yikes" G4 350 (PCI) and 400 (PCI) -- use the same 70-pin connector for Apple 56k modem that the "Blue & White" Power Mac G3 models do, while AGP-based models require a "modem filter board".
--- End quote ---

not sure of the original context of this guys comment re: modem filter board, i have no experience with modem filters.. never used a 56k or DSL line i was spoiled and went straight from 14.4k modem to cable modem broadband back in the day... but in my experience correct or incorrect i beleive apple just modiffied and "folded" the 70 pin connection in half to save space on the actual motherboard.. or being compact.. who knows the reason why... this was way before apple profitted from changing our ports and selling us new dongles every time they released a laptop lol (shame)

anyway long story short i do think that this connector for the modem in the photo is the same connector used on any AGP G4.. which looks like its half the connectors of the PCI g3/g4s but really its just compacted/folded in half and probably still 100% electrically compatible with its predeccessor connnector type.. which modem connector do the imacs have? theres a photo here that shows a closeup of the modem connector on an imac g3 https://lowendmac.com/2018/low-end-macs-compleat-guide-to-cards-for-the-imacs-mezzanine-slot/

i have a stealthport that was created for the bondi blue imac (tray loading) g3 its connector between itself + the modem port was some type of plastic membrane with a port connector on the end of it, i have it working on a B+W G3 as the modem connector is the same between the g3 B+W and the 1st gen imac g3

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