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bagpiper@netcom.com (Michael Hunter) wrote:

>> The $350 system is fully assembled and has a simm.  The $100 kit is a board,
>> MuP21, UVPROM, and I think a part list and manual, and diskette.  I
>> don't think you get all the sockets, xtal, resistors, etc in the kit.
>
>Any doc on the *exact* difference between these two products?
>An estimate of the cost to realize the $100 kit into a product might
>answer most of my question :)

MuP21 Kit Part List

Part number and prices are from JameCo Catalog No. 394, August-October 1994

Quant    Part                      Part No.            Price

1        PCB          
1        MuP21 chip
1        EPROM 27C010                39669             5.95
               (27C020               65681             9.49)+
               (27C040               85462            15.95)+
1         SIM DRAM Moduel 1Mx32      Fry's            (159.00)+
1         14.318 Mhz clcok           108652            3.29
1         75HC138                    45330             0.45
1         74HC245                    45671             0.69
1         74HC574                    46084             0.99
1         40 pin socket              41136             1.19
1         32 pin socket              105380            1.09
1         72 pin simm socket         72426	       2.25
2         20 pin sockets             38623             1.58
1         16 pin socket              37401             0.65
1         4 pin socket for clock     Fry's            (0.95)*
1         20 pin header              53479             0.49
1         3 pin header               109575            0.25
1         2 pin header               108337            0.19
2         .1 u capacitor             25523             0.36
1         330 p capacitor            97308             0.21
1         10 u tantalum capacitor    94060             0.35
1         100K resistor              108214             ?
1         82 Ohm resistor            107908             ?

Simm not available at JameCo.  Stocked at Fry's Electronics
     
>> connect 8 buttons (one for reset) and a monitor, and power.  The
>> software source is for DOS under an FPC version of Chuck's assembler
>> for MuP21.  So you get Chuck's Forth assembler with OK as an
>> example and library of routines.   You can also get a different
>
> Is source for these available?  I don't like haveing to use MeSsy DOG.  mph

Sure.  The source code to Chuck's assembler for MuP21 fits on one page.
I posted the P21Forth version of Chuck's assembler some
time ago.  The FPC version is a little longer than the version on the
the MuP21 because since FPC is 16 bit it must use adouble number to
hold the 20 bit MuP21  words.

Chuck's code that comes with these systems contains:

Code to program a PCMCIA card connected to several of parallel ports
on the PC.  ( a diagram is available to contsruct a PCMCIA card programmer)
(I added a patch to use BIOS supported PCMCIA card drives on desktop and 
laptop PCs)
An assembler for the 8 bit boot instructions.
A sequence of 8 bit boot code to boot from 8 bit ram to DRAM.
A DRAM load routine.
A 20 bit instruction assembler.
A routine to initialize the video processor instructions.
The display and menu handling routines in OK.
Part of the OKAD system on MuP21.
Dr. Ting's character output to video routines, and hex dump.
Dr. Ting's graphic load and decompress routines.     
And various text and graphic demos in the menus of OK.

In addition Dr. Ting provides several utilites to load text and 
graphics from the PC into MuP21 format.

Jeff Fox
Ultra Technology