Upgrading Sprint Expert to use C/99 software

Program a new 93C46 eeprom (it is easier to use a DIL version) with the C/99 code as shown below, turn off programmer, and remove module.

Cut off top of module with a sharp knife, carefully scrape out the filler to expose all the pins of the eeprom and replace module in programmer board to check that it still works correctly.  Remove the original SOIC eeprom from the module by carefully cutting its legs, and then attach six thin wires to the pads 2 – 7. (Pins 1 and 8 are unused).  Connect these wires to the pins of either a similar SOIC ic or preferably, a 8 – pin DIL socket.  Refer to manufacturer’s data sheet for details of the different pin connections.

Original  eeprom is 8-pin SOIC (Rotated version) type 93C46. (Catalyst 93C46J or equivalent) Any standard 5volt DIL 93C46 should work ok.

C/99 93C46 EEPROM Code (corrected)

00		42	D0	00	B2	88	9D	00	00		C0	00	8B	88	00	00	00	00
10		00	00	42	D0	00	B2	80	00		00	00	80	00	E0	00	00	00
20		00	00	E0	B2	00	00	00	00		00	00	00	00	00	00	00	00
30		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
40		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
50		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
60		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
70		00	00	00	00	00	00	00	00		00	00	00	00	00	00	5F	80

Original C/96 93C46 EEPROM Code

00		3C	C4	40	86	4A	ED	00	00		C0	00	70	3C	86	ED	18	00
10		00	00	00	00	00	00	80	00		00	00	80	00	E0	00	00	00
20		00	00	C3	8C	8300	    2D00		   00	00     00 00	00 00    0000
30		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
40		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
50		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
60		00	00	00	00	00	00	00	00		00	00	00	00	00	00	00	00
70		00	00	00	00	00	00	00	00		00	00	00	00	00	00	1C	56