Apple II clones: “BOSS-1″ – Multi-System Personal Computer”:


I got few months ago keyboard for the Microprofessor III (MPF-III) among other Apple II pieces and the original owner, or actually he’s son. We thought obiously he’s father also had the MPF-III somewhere. But, now he actually found clone of it, “BOSS-1”. It’s basicly somekind of clone of the MPF-III so far i can tell. So i picked these Apple II-releated parts:

-BOSS-1 (“TYPE C”)
-Z80 processor – as the seller had bunch of processors available i added the Z80 to the empty slot.
-Apple ROM-card with 6 x EPROM’s 
-MPF-III RS-232-C adapter-card 
-ALF MC16 bare, clone, PCB-board
-Apple II prototyping board (empty PCB)
-Apple II RGB-card 
-“Bridge Challenger” (Personal Software, Casette) Apple II plus 16k. Incomplete. Box cover missing.
-Joystick enclousure and parts. Looks like the “Joystick”.
-Marconi RB2/PC-3 trackball controller (For what platform, no idea yet)

“BOSS-1 – Multi-System Personal Computer”

Not much information could be found from this model..
This is one of those more complex and interesting Apple II clones from Taiwan. 
This clone had several different configurations or types, with 6502 prosessor or with 6502 and Z80 prosessors together in same board. So it does seem to be clone/licenced of Microprofessor (MPF-III) as their product was pretty identical by hardware and seem to use the same keyboard with some alternations to keyboard by funtionalities.

The enclousure is made out of fiberglass:

Different types/models:
TYPE A = 6502 – 9 slots including system slot at “J” , 48k RAM (?) 
TYPE C = 6502+Z80A – 7 slots includes system slot at “0”, 64k (RAM (?) 

Type C board layout: interesting cutout for the speaker in the right corner.

Multi OS system, either by System card (ROM) or loading from floppy. OS ROM = U24 (Type A) or U6 (Type C) if inserted no need for System card (ROM).

Video output:
Either NTSC or PAL (need PAL Expansion card)

What system cards were available:
-System Card (Apple DOS)
-Forth System card (Forth DOS)
-FP System card (Frankin DOS, CP/M, MS-DOS)


What periphals/cards were available:
-Graphics tablet
-12″ Green monitor
-12″ Amber monitor 
-Light pen
-192k RAM-card
-Parallel printer-card 
-Serial RS232-card 
-PAL Color-card 
-Casette drive 
-Floppy disk drive 
-Floppy disk controller-card 
-Ram Expansion board-card
-Eprom writer-card
-ALF AD8088 CPU-card
-6809 CPU-card 
-Robot Controller-card 
-Chinese Character Interface-card 
-Replica interface-card 

The manual metions how you *could* write your own OS for this “Multi-System Personal Computer” if you
wanted and use it and System Card.

Testing & smoke?

I managed to get the system to startup (boot) few times and got “APPLE ][” on top of the screen with the usual beeb! The ROM-card was working obiously. Then i wanted to test booting from floppy so i attached the DISK II interface card (cloned one naturally) but that caused the system to make clicking noise… and then, nothing. It just died. The powersupply went totally dead. The extra stress to power the card and floppy drive was jus too much for the old powersupply.. I inspected the other clones i have, and the //e clone have just the same type of powersupply and pinouts – hope it works. That’s for later testing.


The eprom on the board (U6 location) is preserved now.

Some pictures, information and the manual PDF at:

Few pictures of the BOSS-1:

It’s very possible that local hobbyist/electronics store “Bebek” imported and sold these. They are still around after all these years.

And yes, i’m still interested in finding that MicroProfessor III (MPF-III).


FinApple 2019 (c)
Apple II Forever.