icdpictypes_generic.txt

PIC 单片机最小的 boot loader

For the newer PICs not defined in icdpictypes.inc,
the following generic types have been defined:

model             IdTypePIC  max_flash (this is the max address of PIC)

18F w/4KB flash       0x60     0x800*2
18F w/8KB flash       0x61    0x1000*2
18F w/16KB flash      0x62    0x2000*2
18F w/24KB flash      0x63    0x3000*2
18F w/32KB flash      0x64    0x4000*2
18F w/48KB flash      0x65    0x6000*2
18F w/64KB flash      0x66    0x8000*2
18F w/80KB flash      0x67    0xA000*2
18F w/96KB flash      0x68    0xC000*2
18F w/128KB flash     0x69   0x10000*2
                    
dsPIC w/6KB flash     0x90    0x1000
dsPIC w/12KB flash    0x91    0x2000
dsPIC w/24KB flash    0x92    0x4000
dsPIC w/48KB flash    0x93    0x8000
dsPIC w/66KB flash    0x94    0xB000
dsPIC w/132KB flash   0x95   0x16000
dsPIC w/144KB flash   0x96   0x18000


In order to work with a new PIC not found in icdpictypes.inc:
1. do NOT include the file icdpictypes.inc
   (remove the line:  #include "../icdpictypes.inc")
   and:
2. define  max_flash  in bytes for the desired PIC 
   (#define max_flash 0x4000*2  ; this is for a PIC with 16384 instruction words, with 2 bytes per instruction, resulting in 32768 bytes of flash) 
3. assign to  IdTypePIC  the corresponding value from the above table.
   (IdTypePIC = 0x64)

Example: Suppose the PIC18F252 is not listed: Take the .asm for a simmilar PIC and modify it like this:

	radix DEC
	LIST      P=18F252
	#include "p18f252.inc",
xtal EQU 20000000	
baud EQU 115200	
IdTypePIC = 0x64                            ; code from table above
	#define max_flash 0x4000*2              ; size of flash for 252 (32Kbytes == 16384 words == 0x4000 words)
	#include "../spbrgselect.inc"
	#define first_address max_flash-200
....