Writecode/Erasecode/Readcode

[Ioannis]

The following test code works OK first time (after programmer erases memory), but on the second run it does not erase the block specified.

The chip under testing is the 16F886, 8 words block size.

clear
erasecode #1e00
hserout ["1st test",13,10]
for temp=$1e00 to $1e07
    readcode temp,code
    hserout [#temp," : ",#code,13,10]
next temp

hserout [13,10,"2nd test",13,10]
for temp=$1e00 to $1e07
    writecode temp,temp
next temp
for temp=$1e00 to $1e07
    readcode temp,code
    hserout [#temp," : ",#code,13,10]
next temp

hserout [13,10,"3rd test",13,10]
for temp=$1e00 to $1e07
    writecode temp,12345
next temp
for temp=$1e00 to $1e07
    readcode temp,code
    hserout [#temp," : ",#code,13,10]
next temp

stop

Results on first run:

1st test
7680 : 16383
7681 : 16383
7682 : 16383
7683 : 16383
7684 : 16383
7685 : 16383
7686 : 16383
7687 : 16383

2nd test
7680 : 7680
7681 : 7681
7682 : 7682
7683 : 7683
7684 : 7684
7685 : 7685
7686 : 7686
7687 : 7687

3rd test
7680 : 12345
7681 : 12345
7682 : 12345
7683 : 12345
7684 : 12345
7685 : 12345
7686 : 12345
7687 : 12345

Results on second run:

1st test
7680 : 12345
7681 : 12345
7682 : 12345
7683 : 12345
7684 : 12345
7685 : 12345
7686 : 12345
7687 : 12345

2nd test
7680 : 7680
7681 : 7681
7682 : 7682
7683 : 7683
7684 : 7684
7685 : 7685
7686 : 7686
7687 : 7687

3rd test
7680 : 12345
7681 : 12345
7682 : 12345
7683 : 12345
7684 : 12345
7685 : 12345
7686 : 12345
7687 : 12345

Why Erasecode does not erase the block?

Ioannis

[Ioannis]

Now, that is interesting. It compiled and programmed just fine a couple of times.

Then MCS said it needs to reload the different time stamp file and since then, Erasecode is not valid command...!

Ioannis