At first I have to say sorry if this is against the rules, because I need advice or full schematic and code for programming 32-pin Flash memory chip(Winbond w29c040-90), and this is part of my one of my main questions in other topic.
I still posted this because, in this topic I only ask advice or guides for building working working Flash memory programmer, for a standalone 8x 512 KB flash memory chip, only using Arduino, breadboard, wires and resistors, capacitors etc maybe.
And I was not sure if programming questions was a right place for this , so sorry if not and mov this then for right topics.
Where's all the data coming from that you want to put on that chip?
Thanks for your answer sir!
Sorry I'm not exactly sure what you mean. But if you question had something to do with programming, I try to answer something..
There were somewhere in there Arduino forums some topic which was something like "Arduino as a PIC programmer" and there was very very simple schematic which few wires were connected with arduino+ PIC pins and, only one with 330 ohm resistor + additional 12 V power supply were needed and all that works with my PIC16F84A MCU.
At first there were C code for Arduino and then serial monitor told simply "started" or something similar. Then Serial monitor read users code , and answered , example "D" if code succeed.
Hello again and have something more to ask now....but about same things.
Have somehow here hacked the 4 pin standard USB cable so, that he only used standard components? I mean no anything more complex TTL compatible chips than 555 timer example or some simple combo of few 7400 or 4000- series IC's with resistors, transistors...etc..?
I just succeed most important with my other project(which actually was associated with this...) with pretty fast, build medium sized breadboard....I say "pretty complex programmable logic unit" or maube little computer with minimal inputs and only tens of standard leds for output, not absolutely sharp design, but learned A LOT new things about TTL logic MUX's, ALU's, and succeed for creating a simple register, counters and totally working two sram interfaces... partly "random" instructions for the whole circuit, but very surprisingly that whole medium scale piece of scratch and a lot of wires seemed pretty "programmable" at least when looked every single leds and what the ALU and only eight buttons and what they did all the time, when I wan't even pushed any button. Maybe because of ALU design were enough complex and had bigger sram chips.
But back to the point, sorry. Have some who or will someone there ever seen or built Usb interface, for example program TTL chips and which isn't still so complex? The second requirements would bee that PC would recognize that things enough to have capable to use some programming software that would recognizes a FLASH memory chip and and can burn hex file example into the chip.
That specific Flash memory chip which I have, have 32 pins but that is not the main problem, The "device" have somekind of controller built into it, and need PC interface for sure or very accurate circuit schematic for accurate programming waveform for different inputs, otherwise The device use's one of it's so called protection and erase the chip soon after programming/or won't start programming at all.