![]() I feel I now have a somewhat basic understanding on building a SBC. (I'm so thankful that I kept these old books from my studies!!!) These include the 6502 primer ( ), and 2 books, "Microprocessors and Microcomputers" 3rd by Tocci/Laskowski, and "Programming & Interfacing The 6502 With Experiments" by De Jong. I selected a binary format.I've spent the last 3 weeks reading up heaps on 65C02 and related chips. So you need to press the “Save” button in the toolbar. After reading the EPROM the window is empty but the contents of the EPROM are in the program cache. The LED on the programmer started to blink and the progress bar showed the progress. ![]() By clicking on select in the toolbar (3rd icon) this dialog shows up After confirming the chip by clicking “OK” this dialog with addition information is displayed telling you how to insert the chip I did as I was told… … and pressed the “read” button in the tool bar (4th from the right). To test the programmer I picked an 512 kbit EPROM from an Auerswald PBX. Testing the programmer (reading an EPROM) ![]() Awful English, even worse than my English -) There were even (unsigned of course) 圆4 drivers for Windows. The installation instruction is awful but it gets to the point and I had no problem installing the software. I refrained from using the drivers from the CD-R and instead downloaded them from the stg51 website (( Driver & Software download page on the stg51 website)) Now to the software installation process. Too bad I noticed the seal of warranty only after screwing the programmer back together. The PCB looks well build too back of the PCB detail of the PCB ![]() Back of the programmer: Note the misspelled url Of course I could not resist and opened the programmer. A flawless injection molded case and a good 3M-branded ZIF socket. It came in a cardboard box and this were the contents Content of the Box: programmer, USB cable, QC card and a CD-R with the software on it The programmer: The built quality is surprisingly high. So I went to ebay an bought one of this widespread available “Genius G540 (( G540 programmer on ebay))” EPROM programmers. Something like this Hack a day (( Hack a day on hidden photographs in old Mac ROM chips )) post. ![]() I am not looking for program data but more for character maps, hidden “Easter eggs”. Now I was curious what data these hold exactly. I have been collecting old EPROM chips for many years. ![]()
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January 2023
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