A minimal-part-count way to connect an SD card to a 68K
dmitry.gr
dmitry.gr
https://allpinouts.org/pinouts/connectors/cartridges_expansi...
Has 2 chip select lines. Hm.
I immediately remembered Atari ST read only cartridge port abused into talking to Realtek ethernet chip https://sites.google.com/site/probehouse/how-to-network-an-a...
i wonder why it didn't endure? multitouch? inadequate 68k performance? malware?
A palm pilot could do most of what people love iPhones for, but the only people who used them were business freaks and super-nerds
it wasn't until the handspring treo 180 https://en.wikipedia.org/wiki/Handspring_Treo (released in 02002) that palmos devices were smartphones. the higher-end models even had color
Without a keyboard or numpad just a full front face color touch screen, it was a prototype modern style phone. I had email, audible.com app, ebook readers, ssh and irc clients, even a vnc client. Vnc & rdp were ractically useless on 14.4k dialup equivalent and 160x240, but it actually physically worked. I had a couple different contacts db to dialer integration apps. Then just the infinite random apps like a netmask calculator, resistor color code calculator, etc. The contacts db had my works entire customer & vendor dbs on the phone while off line by using a simple csv export and the palm desktop synced it to the phone. Full size sd card slot.
It was freaking great. in 2001. iphone and android are 2007
Of course there are no internal expansion connectors at all on an original Mac. Steve didn’t want the purity of the hermetically sealed machine to be sullied.
This thing came with a custom-made tool to get the case open (a long-shafted Torx driver with a flat paddle welded to it to pry the case apart). Once there, you removed the ROM chips, placed them in a little daughterboard, and inserted that into the ROM sockets. That’s how they got access to the CPU bus. There was a SCSI controller and some address decoding on the board that attached to the drive over a ribbon cable.
They wrote a custom driver to talk to the controller, and even gave out the source code. Fortunately Apple had just released the first version of HFS for the 800k floppy disks, so to the OS this looked like a giant (20MB) floppy.