1. Identify Your Hardware & Software
Minipro : Refers to the minipro open-source command-line tool for TL866 series programmers (TL866A, TL866CS, TL866II+). "670" chip : Could be:
AT27C256R (or similar 32KB EPROM, sometimes labeled with a 670 date/batch code) M27C670 (a 16-bit EPROM? Unlikely standard) Winbond W27C512 (less likely) Most probable: SST27SF256 or AM27C256 with a “-670” speed grade (70–90ns?) Or 670 as part of a microcontroller: e.g., PIC16F670 .
"Download top" : Could mean:
Download the top half of a chip’s memory Flash the “TOP” of a multi-boot image Download a specific file named top.bin or a TOP programming configuration.
Assumed use case: You have a 32KB EPROM (like 27C256) and want to write a binary to the upper 16KB (“top half”) using minipro .
2. Install Minipro Linux/macOS (Homebrew/Linux native) git clone https://gitlab.com/DavidGriffith/minipro.git cd minipro make sudo make install minipro+670+download+top
Windows Use the official Windows binary or use WSL. The minipro tool is cross-platform. Verify installation & programmer connection minipro --list minipro -p <chipname> -i
If the programmer is not detected, check USB drivers (on Windows, use Zadig for libusb).
3. Determine the Correct Chip Model Run: minipro --list-supported Verify installation &
Then search for 670 : minipro --list-supported | grep -i 670
You might see: