FRAM71B

[rprosperi]

(11-01-2016 10:48 AM)Erwin Wrote:  When I initialize the PORT 5.05 with 64KB (POKE "2C012"; "109100") ... my last module it is not configured as IRAM when i do the FREE PORT without an error. The SHOWPORT shows type "0" instead of "1", and I couldn't ROMCOPY (error: Device Not Found) So I configured it as ROM (POKE "2C012"; "50D100") and tried the ROMCOPY but with the "verify" error.

I think the issue could be where your 64KB block is located. Although you declare that 64KB FRAM F_Block near the end of your config string, the '71 initialize routine (in the OS) allocates larger memory blocks in lower addresses, regardless of which port they are physically (or in the case of FRAM logically) located.

Most likely, the init routine configured your RAM blocks in this order:

1. Main RAM (5.00)
2. 64KB Block (to hold the image, after converting to IRAM) (5.01)
3. Other 32KB blocks for holding other images. (5.02, 5.03, etc.)

The easiest way to check this is with the MEMBUF program and SHOW PORT commands. In fact for each new config you create, I suggest you run these 2 commands to see the actual memory map; it is not always what you expect it to be.

Run MEMBUF immediately after your initial start with the new config, then after you FREE the various PORTs, and it should be easy to track what is happening.

Also, re-read the article here for a detailed explanation of the memory configuration process.