Unidentified 1986 Apple Macintosh Plus Portable / Luggable Industrial Vintage Computer

I just aquired this 1986 Apple Macintosh Like Plus Portable / Luggable Industrial Vintage Computer.

I don’t know much about this machine other than it’s based on a 1Mb Macintosh Plus machine, it’s completely custom made in around 1986 and it does not work.

The machine itself is really unusual as it’s built to a really high finish with injection moulded plastic and really finely cut steel and aluminium, but it doesn’t have a single label on it - nothing to be able to tell who made it and why.

Inside there is a Macintosh Plus motherboard and analog board, with a custom adapted SCSI hard drive, floppy drive and some controls such as reset and either volume or brightness. There is also a serial output on the back, which suggests this had some kind of industrial use.

Has anyone ever come across one of these?


Wico Command Control joystick adapter

The Wico Command Control Joystick adapter allows and Atari and Commodore joysticks to be used with the Apple II. xot has reverse engineered the design.


On the use of early-mid 1970s 4k x 1 DRAMs in the Apple-1

Here is a report about the use of early-mid 1970s 4k x 1 DRAMs in the Apple-1.

Most of us are using later 4k x 1 DRAMs produce towards the end of the 1970s or later, such as the ones I furnished with my famous kits (now sold out). Typical examples are:

Motorola MCM4027AC3 Date codes 7927, ...

Mostek   MK4027N-4  Date codes 7935, ...

Intersil MK4027J-3  Date codes 7948,8017 ...

It was found that the former needed all the "reliability mods" with the extra bypass capacitors and the six damping resistors, Mostek often was happy with only the damping resistors, and on some PCBs / builds, the Intersil ones needed no reliability mods at all…



Subscribe to Applefritter RSS