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PX41CX
11-02-2022, 05:18 AM (This post was last modified: 11-02-2022 05:22 AM by Sylvain Cote.)
Post: #12
RE: PX41CX
(11-02-2022 02:43 AM)agarza Wrote:  Currently, the only way to add modules to the PX41CX is to flash them along with the firmware.
Are you sure ?

From what I am reading ...
1) the maximum directly Flash addressing space is 16 bits or 64 KB
2) the first 32KB is reserved for code, divided between boot code and app code while the second 32KB is reserved for data
3) of the 128KB Flash
3a) the first 32KB is reserved for code (mapped into the direct addressing space)
3b) and the last 96KB can be divided into three 32KB data blocks of which one can be mapped into the direct addressing space.
4) you also have three USART that can be used for RS232 transmission

So with code, you could come with a scheme that allows data transfer (ROM images) transfer over the serial interface and store the data into one of the three 32KB data pages.
You could then map a data page containing the ROMs into the address space. For sure it will be a little more complicated than that, but it seems doable.
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Messages In This Thread
PX41CX - agarza - 10-29-2022, 07:58 PM
RE: PX41CX - Massimo Gnerucci - 10-29-2022, 09:05 PM
RE: PX41CX - Liam Hays - 10-31-2022, 01:50 PM
RE: PX41CX - SammysHP - 10-31-2022, 03:53 PM
RE: PX41CX - agarza - 11-01-2022, 01:50 AM
RE: PX41CX - johnb - 10-31-2022, 07:05 PM
RE: PX41CX - agarza - 11-01-2022, 01:44 AM
RE: PX41CX - Massimo Gnerucci - 10-31-2022, 07:16 PM
RE: PX41CX - Jlouis - 11-02-2022, 01:19 AM
RE: PX41CX - agarza - 11-02-2022, 02:43 AM
RE: PX41CX - Jlouis - 11-02-2022, 03:08 AM
RE: PX41CX - Sylvain Cote - 11-02-2022 05:18 AM
RE: PX41CX - J-F Garnier - 11-02-2022, 08:29 AM
RE: PX41CX - Sylvain Cote - 11-02-2022, 02:49 PM
RE: PX41CX - J-F Garnier - 11-02-2022, 03:50 PM
RE: PX41CX - agarza - 11-02-2022, 06:48 PM
RE: PX41CX - rprosperi - 11-02-2022, 08:11 PM
RE: PX41CX - agarza - 11-02-2022, 10:17 PM
RE: PX41CX - goosnarrggh - 06-07-2023, 04:27 PM
RE: PX41CX - goosnarrggh - 06-07-2023, 05:37 PM
RE: PX41CX - agarza - 06-07-2023, 09:38 PM
RE: PX41CX - Eric Rechlin - 06-08-2023, 02:12 AM
RE: PX41CX - toml_12953 - 11-04-2022, 03:58 AM
RE: PX41CX - Jlouis - 11-04-2022, 06:23 AM
RE: PX41CX - TomC - 11-04-2022, 02:19 PM
RE: PX41CX - agarza - 11-19-2022, 04:53 PM
RE: PX41CX - TomC - 11-19-2022, 06:00 PM
RE: PX41CX - TomC - 11-19-2022, 06:02 PM
RE: PX41CX - agarza - 11-19-2022, 08:20 PM
RE: PX41CX - Sylvain Cote - 11-20-2022, 02:25 AM
RE: PX41CX - agarza - 11-20-2022, 02:54 PM
RE: PX41CX - anetzer - 06-06-2023, 05:53 PM
RE: PX41CX - agarza - 06-06-2023, 06:24 PM
RE: PX41CX - Liam Hays - 11-20-2022, 05:15 PM
RE: PX41CX - agarza - 11-20-2022, 07:30 PM
RE: PX41CX - grbrum - 06-05-2023, 06:07 PM
RE: PX41CX - agarza - 06-06-2023, 04:37 PM
RE: PX41CX - rprosperi - 06-06-2023, 10:51 PM
RE: PX41CX - agarza - 06-07-2023, 02:20 AM
RE: PX41CX - rprosperi - 06-07-2023, 11:39 AM
RE: PX41CX - agarza - 06-07-2023, 04:33 PM
RE: PX41CX - goosnarrggh - 06-07-2023, 05:24 PM
RE: PX41CX - agarza - 06-07-2023, 09:32 PM
RE: PX41CX - goosnarrggh - 06-07-2023, 09:40 PM
RE: PX41CX - agarza - 06-07-2023, 10:35 PM
RE: PX41CX - goosnarrggh - 06-08-2023, 01:06 AM
RE: PX41CX - goosnarrggh - 06-08-2023, 11:48 AM
RE: PX41CX - rprosperi - 06-07-2023, 09:02 PM
RE: PX41CX - agarza - 06-07-2023, 09:57 PM
RE: PX41CX - thenozone - 06-06-2023, 05:36 PM
RE: PX41CX - revwillie - 06-11-2023, 04:10 PM
RE: PX41CX - agarza - 06-11-2023, 06:21 PM
RE: PX41CX - comabereni - 09-09-2023, 09:03 PM



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