FRAM71B

[Erwin]

(10-06-2016 04:53 AM)Sylvain Cote Wrote:  Hello Erwin,

Assuming you have followed my guide, you should have the following configuration

Code:


PEEK$("2C000",32) -> "D3E4D5D69798[b]19[/b]1A1B1C9D0000000000"

I would suggest to modify it for the following

POKE("2C000","D3E4D5D69798[b]99[/b]1A1B1C9D0000000000") / power cycle

With the above configuration, the FRAM block available (0, 1, 8, 9, E, F) for ROM image and the bank switching capability you can load all the ROMs.

[...]

Warning 1: Although it should work, I have not tested the following configuration.
Warning 2: The following commands will trigger on-the-fly bank-switching (OTF-BS) and if they contains LEX files they may cause a Memory Lost.
Dave is the expert here on OTF-BS, not me, yet , so do a backup of your data before playing with this.

[...]

Sylvain

Good morning,

thank you for your help ... checked the PEEK - was OK and started with the POKE and after power cycle ended with a <Memory lost>. Seems to be a tricky thing ... So I start to reconfigure my calculator again and then give the logic of the banks a better view :-)

EDIT
It looks like that with "original" version of the guide it is not possible to declare the PORT 5.05 with the POKE-Statement change "19" -> "99" to reduce the main memory. I tried it a second time and again get a memory lost, maybe there have to be another way for this (before declare the 160k in the first guide)?

EDIT 2
I think it was my fault. I didn't put the jumper CN2‐5 back after configuration (is this correct? than this hint is missing in the guide) so I didn't get the Port 5.05 but the PEEKs were OK. But it ist mysterious that after I put the jumper back I additionally to the Port 5.05 I get a Port 5.07 after putting the jumper back ... very strange.

EDIT 3
Cause the last trial was not successful with the mysterious PORT 5.07 and the calculator crash after. I made a fresh installation - to have more comfort I put the PILTERM and KEYBOARD file at the beginning of the process in the IRAM instead of fiddling around with the small keyboard on the calculator. I left the jumper CN2‐5 set - that seems to be right.
Finally I get the 160 KB RAM in Port 5.05 in addition with the 16 KB MainRAM.

Code:

MEM = '178284'.
PEEK$("2C000",32) = "D3E4D5D69798191A1B1C9D0000000000"

Showport gives me:

Code:


0.05  16384  2
5     16384  2  FORTH41ROM
5.01  32768  2  MATHROM
5.02  32768  2  JPCROM
5.03  32768  1  IRAM
5.04  32768  1  IRAM
0      4096  0  MainRAM
0.01   4096  0  MainRAM
0.02   4096  0  MainRAM
0.03   4096  0  MainRAM
5.05 163840  0  add. Main RAM

So I'm not sure what I did wrong at the beginning of the installation for the bank switching.

regards
Erwin