- CA80 is all you need to burn 28C64.
- No additional harware needed.
- 28C256 is too big, then I build simply burner.
- I used a SC108 PCB on which I put only Z80 (CMOS) and U3 as programmer socket.
- Modify the U3 connections:
- isolate PIN1 and connect A14 there (e.g. to PIN3 U2)
- isolate PIN27 and connect to WR_ (e.g. to PIN29 U2)
- PIN 20 connect to MREQ_ (e.g. in U2 connect PIN 22 to PIN30)
- isolate PIN22 (OE_) and connect to +5V through a 10k resistor (pull up)
- Modify the U3 connections:
- I used the Z80-MBC2 software (by J4F), however, I made a lot of modifications and new features.
- The code allows you to transfer data to the AT28C256 or KM28C64 memory (others have not been tested).
- I use "page write mode" when possible. Otherwise "single byte mode".
- First disable SDP.
- HL register is a memory pointer.
- The two instruction are "LD (HL),n" and "INC HL".
- Burn a record (16 bytes) in page write mode.
- Just put the *.HEX (Intel HEX) files and the 28C256.txt file on the SD card.
- Up to five HEX files with name format 8.3 (xxxxxxxx.HEX)
- In the 28C256.txt file put the names without extensions separated by a space.
- Just connect D0...D7, CLK, RESET and power.
- The description can be found in the code.
- Note that addresses A13..A15 are invalid.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent