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That's great!! You are aware of the bug fix on v1.2, right? http://krauser.persiangig.com/Microbaz/post30/1.2.PNG Download EPROM Pin Swapper Version 1.2 Changes : Added 29F040 Bug fix for 27C080 Still it is very buggy so use it at your own risk. Altough the author says it's buggy, it worked with me...

I found ! :lol: For my PCB (for LoROM games) , I have to bend next pins on 27C040 EPROM : pin 1 pin 2 pin 30 pin 31 --------------- And connect them like that : 27C040______________________32-pin socket Mask ROM Pin 1 (VPP)--------------> Pin 32 (VCC) pin 2 (A16)--------------> Pin 31 (A16) pin 30 (...

You still need to strip the 512-byte copier header before programming the EPROM. In a sane world, a tool to strip the header would change the extension from .smc (for Front's Super Magicom copier) to .sfc (Super Famicom binary), and the .sfc is what you'd burn. Compare Genesis, where the rule is th...

Link is dead

If you want to swap yout ROM's pins, there's the great Farid's EPROM pin swapper. The difference is that you need to manually assign the pins you wish to swap. It worked great for me in the past, and probably will do the same to you. :wink: AFAIK, the source code is included. Thank's. So in this so...

Did you program the ROM without swapbin or with it? You should do it without. All the address pins are going to their proper sockets? I program directly .SMC file without SwapBIN. 27C040 Pins bended : Pin 1 (VPP) pin 2 (A16) pin 24 (OE) pin 30 (A17) pin 31 (A18) Other pins are in socket. Bended pin...

It's do not work.

Maybe cause my PCB is already do some connection between M27C801 and Mask ROM ?
The fact that my PCB work only with Swapped BIN method, it's it changes some thing ?

I meant the 27C040 pins, not 40 pins haha Put it in the 32-pin socket as you normally would (or in the 36-pin socket, put it in so pin 1 on the ROM is pin 3 on the socket), but bend up the different pins between the EPROM and the socket. Comparing the two shows these different signals (remember the...

Just program it normally ... OK ...and rewire the 040 pins to the Mask ROM pinout so they match. Rewire all 40 pins ?! :shock: Why I have to rewire all 40 pins if the only difference between 27C040 and M27C801 are in one pin , pin1 (VPP vs A19) https://i3.imageban.ru/out/2020/05/31/a9b833a09b02be63...

Swapbin switches A17 and A19, which on the 27C080 are pin 30 and pin 1 respectively. The 27C040 doesn't have an A19 pin. Pin 1 for the '040 is VPP, which is not an address pin. So using swapbin on the ROM file basically erases part of the game because you won't be able to access it on the '040. Tha...

Hi, I have PCB for M27C801 swap bin datas. I use every time "SwapBin" method to my ROM files with SNES ROM Utility and program it with TL866. https://www.romhacking.net/utilities/screenshots/593screenshot1.png All works great! Now I would like to use 27C040 EPROM for 4Mbit games on the sam...

Yes It's WORK! Thank's. Here is final diagram of LoROM/HiROM 2in1 games - for Flip-flop 74HC74 and M27C801 https://i2.imageban.ru/out/2020/05/31/dcb0b3be40ea4e43ac822eb5482e0175.jpg This diagram if for SWAP BIN roms . If you dont use SWAP BIN method , connect pin9 (Data Output 2) of 74HC74 => to pin...

Thank you

lidnariq wrote: ↑Thu May 28, 2020 2:44 pm The pin that is functionally used as A19, to distinguish between the first half and the second half of the data you programmed.


(that is, pin 30)

If so, you talking about pin30 of 27C801 (originally A17 => became A19 after swap method).
I will try to do some test this week-end.

Have you already made a reproduction without using the 74'74? yes If so, what did you do there? For Hirom My pin30 of 27C801 (originally A17) connected to pad 44 of PCB (which is A19) For LoROM My pin30 of 27C801 (originally A17) connected to pad 45 of PCB (which is A19) After SWAP BIN method, pin3...