--_004_BC81C3A2922841DFB7DC6A8A13B3B91Bivp1_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Chris, thanks for the reply I'm at odds with the d/s. I believe the example they give is missing a tblrd*- after the erase. I already thought that for some reason and others on the web have commented on it. Yet at least one post in the MC forum includes the d/s example verbatim and says it works. Compare my code with the d/s example. AFAIK it's identical, with the addition of the tblrd*- (tblwt*- seems to work too) Consider the results in the attached gif. buffer48 has test data in it, from 0x17 to 0x46. There are two "successful" outcomes. One is that the 1st byte of a group of 8 (eg 0x17) is written as the 8th, ie the group has been rotated. In the other, the bytes are in the correct order but +8 bytes offset in the block I've tried putting things in and taking things out but not found a sequence or alteration which makes sense, right or wrong And I still can't write to a block unless I include these data statements in the code, 0000s which are written to the chip when programmed org t_data data 0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000 data 0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000 data 0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000 data 0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000 Joe= --_004_BC81C3A2922841DFB7DC6A8A13B3B91Bivp1_ Content-Type: image/gif; name="1320_flash_writes.gif" Content-Description: 1320_flash_writes.gif Content-Disposition: attachment; filename="1320_flash_writes.gif"; size=5966; creation-date="Sun, 09 Oct 2016 02:28:03 GMT"; modification-date="Sun, 09 Oct 2016 02:28:03 GMT" Content-Transfer-Encoding: base64 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