Flash in 28A Superseded?

[MearCat]

I currently use a 28A chip and preload a lookup table in FLASH memory via 3 programs (it's a big lookup table), then separatly load the main program and use READMEM to access the data.

Does the 28X1 have FLASH memory? Has this functionality been superseded in the 28X1 by something else that can allow me to preload a lookup table which DOES NOT get overwritten when a program is downloaded (like the EEPROM values). I can't seem to find anything in the new manuals.

 

[hippy]

There is no ability to that on any of the PICAXE's except the 28A. It's an anomaly that the 28A does not overwrite its READMEM area; all the others update/overwrite/zero Flash, Table and Data Eeprom on every download.

The easiest workround might be to use external I2C Eeprom. The 28X1 has 4096 bytes of code space ( compared to 256 bytes of the 28A ) so it may be possible to combine all your 28A programs into one, firstly filling then using Data Eeprom for your lookup table.