The 27C322/160/800/400 EPROM Programming Adapter is a hardware solution designed to extend the capabilities of EPROM programmers, such as the TL866-series universal programmers, enabling reliable programming and reading of large parallel EPROM devices that exceed standard socket and device support limitations.
It is based on the open-source adapter design by Mafe72. At BeepFixer, we’ve tested this design for several Commodore-based projects and shared back some real-world findings with Mafe72. A few of these results can also be found in his GitHub page.
The adapter provides the required pin mapping and signal routing to allow supported EPROMs to be used with TL866-series programmers.
Supported device families include:
- 27C400: 40-pin, 4Mbit (256k x 16-bit, 512k x 8-bit)
- 27C800: 42-pin, 8Mbit (512k x 16-bit, 1M x 8-bit)
- 27C160: 42-pin, 16Mbit (1M x 16-bit, 2M x 8-bit)
- 27C322: 42-pin, 32Mbit (2M x 16-bit, no 8-bit access mode)
Features
- Verified working with XGecu / MiniPro TL866-series programmers
- Supports multiple EPROM sizes in the same adapter series (27C400 / 27C800 / 27C160 / 27C322)
- Based on the Mafe72 open-source adapter design 27c160-tl866-adapter
- Likely compatible with other TL866-compatible clone programmers (not tested)
- Provides pin mapping for compatible parallel EPROM devices
- Successfully tested on a TL866A in BeepFixer projects
- Programming is performed using the 27C4096 device selection in MiniPro software