ISEPIC – Ice cold replicated

Introduction

ISEPIC extension was not only very famous at that time, but also infamous.

Even if the operation was a little bit clumsy, even a layman could make “backup copies”. At least as long as it wasn’t programs or games that had to reload from floppy or cassette.

Because of the simplicity, and that now virtually anyone could make copies of games, the cartridge was not only very unpopular with the program developers and companies, but also in the cracker scene.

The expansion was quickly taken off the market by industry pressure, but was still quite widespread at the time.

Schematic

So I thought it was time to get this cartridge as well. Therefore I created a schematic by reverse enegeeniering.

From this I developed a new board, but I adapted the board so that it now fits into a standard cartridge housing.

Component list

Only commercially available components are used. I have listed the brands only as an example. However, otherwise comparable components can also be used.

ManufacturerPart NumberDescriptionQuantity
E-Switch100SP1T2B4M6QESWITCH TOGGLE SPDT 5A 120V1
DiotecBC547CBC547C Diotec Bipolar NPN Transistor 45V1
 Kemet C320C104K5R5TA7305Ceramic Disc Capacitors 100nF -20%~+80% 50V Through Hole,P=2.54mm RoHS8
YageoCFR-25JB-52-1KRES 1K OHM 1/4W 5% AXIAL3
Vishay BCcomponentsK102J15C0GF5TL2CAP CER 1000PF 50V C0G/NP0 RAD1
Texas InstrumentsSN74LS02NIC GATE NOR 4CH 2-INP 14DIP4
Texas InstrumentsSN74LS30NIC GATE NAND 1CH 8-INP 14DIP2
Texas InstrumentsSN74LS75NLatch Transparent 4-CH D-Type 16-Pin PDIP Tube1
ToshibaTMM2016AP-10Integrated Circuit Memory 2016/TMM2016AP10 TOSHIBA Static RAM memory prog. volatille KX8=21

PCB

The board can be ordered at PCBWay:

Software

Here you can download the required software and the manual:

ISEPIC

d64

ISEPIC Starpoint Software Tooldisk

Size: 170.75 KB
Hits: 100
Date added: 21-04-2021
d64

ISEPIC Software Collection

Size: 170.75 KB
Hits: 115
Date added: 21-04-2021
pdf

ISEPIC Manual

Version: 1.0
Size: 2.82 MB
Hits: 67
Date added: 21-04-2021

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