[fpc-devel] Topic for the list - Embedded port for PIC Micros
A very interesting port for an OS-less platform would be a port to the PIC family of microcontrollers. There may be some issues because memory is in short supply but notwithstanding, this would be pretty cool. Any comments? Nick Brown E-mail: mailto:nick.br...@greenamps.co.uk nick.br...@greenamps.co.uk Post:1 Friar Street, Reading, Berkshire, RG1 1DA, UK Tel: +44 (0) 870 486 8783 Fax: +44 (0) 870 288 9520 Mobile: +44 (0) 7901 97 36 45 Skype: nick.brown SIP: mailto:3218...@sipgate.co.uk 3218...@sipgate.co.uk P Please consider the environment before printing this e-mail ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
Nick Brown wrote: A very interesting port for an “OS-less” platform would be a port to the PIC There is a 8 bit, a 16 bit, and a 32 bit series of PIC processors. The 32 Bit platform is MIPS. -Michael ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
In our previous episode, Nick Brown said: A very interesting port for an OS-less platform would be a port to the PIC family of microcontrollers. There may be some issues because memory is in short supply but notwithstanding, this would be pretty cool. As Michael said, what PIC exactly ? The three ranges (8/16/32) are totally different. I'm using the 8-bitters and the 16-bitters. - IIRC the 8-bit PICs have a segmented memory model (pages of 256 bytes selected using a selector register) - 2-8kb of memory (maximum on the 16-bit iirc, with maybe a 16kb coming soon) is too little to even use strings and other normal routines. - You need SFR support, but worse, to convert the device specific header file for each of the hundreds of different chips, and maintain them. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
IMHO, porting FPC to 8 and 16 Bit PIC is close to impossible, while a PIC 32 Bit (=MIPS) port should be doable. -Michael ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
Nick Brown schrieb: A very interesting port for an “OS-less” platform would be a port to the PIC family of microcontrollers. There may be some issues because memory is in short supply but notwithstanding, this would be pretty cool. Any comments? If it's really interesing, somebody would have started already a port. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
In our previous episode, Florian Klaempfl said: Any comments? If it's really interesing, somebody would have started already a port. Afaik all architectures are done by three long time FPC devels (Jonas, Peter, Florian, correct me if I'm wrong), except for PPC64, so that is a bit oversimplified maybe? If it really was that way, there would have been more variation in who made new ports. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
Marco van de Voort schrieb: In our previous episode, Florian Klaempfl said: Any comments? If it's really interesing, somebody would have started already a port. Afaik all architectures are done by three long time FPC devels (Jonas, Peter, Florian, correct me if I'm wrong), except for PPC64, ... and except sparc (started by Mazen) and m68k (started by Carl). Both were not long time FPC developers when they started the port ;) so that is a bit oversimplified maybe? If it really was that way, there would have been more variation in who made new ports. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
I'd really appreciate the 32 Bit PIC stuff, as this is MIPS and I might want to do a NIOS port some day and the NIOS ISA is said to be quite similar to MIPS (even the names are only a few bits apart :) ) -Michael ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
Op Thu, 23 Jul 2009, schreef Michael Schnell: I'd really appreciate the 32 Bit PIC stuff, as this is MIPS and I might want to do a NIOS port some day and the NIOS ISA is said to be quite similar to MIPS (even the names are only a few bits apart :) ) The main challenge for a MIPS port is the absence of flags, there is a lot of code in the compiler that returns expression results in LOC_FLAGS. Of course it is perfectly possible to change these codes to use LOC_REGISTER, but it is work. Daniël___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
I'd really appreciate the 32 Bit PIC stuff, as this is MIPS and I might want to do a NIOS port some day and the NIOS ISA is said to be quite similar to MIPS (even the names are only a few bits apart :) ) -Michael ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] Topic for the list - Embedded port for PIC Micros
The main challenge for a MIPS port is the absence of flags, there is a lot of code in the compiler that returns expression results in LOC_FLAGS. Of course it is perfectly possible to change these codes to use LOC_REGISTER, but it is work. I see. Thanks for the pointers ! -Michael ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
[fpc-devel] Apache 2.2 modules for FreeBSD
Hi, I'm trying to run the examples of http22 units in a FreeBSD 7.2 for i386, with Apache 2.2.11. The examples compiles with FPC 2.2.4, but when I try to run apachectl start, it crashes with this message: httpd: Syntax error on line 104 of /usr/local/etc/apache22/httpd.conf: API module structure 'hello_module' in file /usr/local/libexec/apache22/mod_hello.so is garbled - expected signature 41503232 but saw - perhaps this is not an Apache module DSO, or was compiled for a different Apache version? I downloaded the units to test this from http://svn.freepascal.org/cgi-bin/viewvc.cgi/trunk/packages/httpd22 To compile them I used: fpc -WR -XX -Xs -B -Fuhttpd22/src -Fuhttpd22/src/apr -Fuhttpd22/src/apriconv mod_hello.pp Any help will be appreciated!. Leonardo. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
