又有新書啦，對岸的

http://www.china-pub.com/computers/common/info.asp?id=24101

這本不錯，作者是 Microchip 上海分公司的人

http://www.buaapress.com.cn/buaa/html ... sp?id=1044&cat_f=单片机与嵌入式系统&cat_s=单片机

PULL HI 比較沒有問題
比較怕的是無法確實DOWN 到LOW準位

可以吧
因為我已經有PROJECT使用12F508量產了
應該MICROCHIP很樂意給你吧

list P=18F252
#include<P18F252.INC>
VAL equ .170
num equ 0x80
;*******************
org 0x00
nop
;*******************
Initial:
banksel TRISB
clrf TRISB,0
movlw B'00000001' ;最初LED位置
movwf LATB,0
;*******************
start:
call Delay
CALL Delay ;這是比較笨的方法連CALL三次試試看
CALL Delay ;但是這是不可取的方法可是比較快可以驗證是不是DELAY過短的問題
CALL Delay
rlncf LATB,f,0
goto start
;*******************
Delay:
banksel num
movlw VAL
movwf num,1
Delay_loop nop
decfsz num,1,1
goto Delay_loop
return
;********************
end

USD$2000
NTD$6XXXX

板主大哥
我現在要使用40MHZ請問我的ICE2000可以跑到40MHZ嗎
我打算模擬PIC18F8722

編譯時發生如下的錯誤，請高人指點迷津!

Error - section '.idata_GHWINIT.o' can not fit the section. Section '.idata_GHWINIT.o' length=0x00000522

TKS.

我是用這種程式simulation方法:
舉個例子原來程式是:

movlw GPIO
btfsc GPIO, 0x01
goto t1
goto t2

可以改成
movlw GPIO
movwf temp1 ;這樣就可以手動temp1的值.
btfsc temp1, 0x01
goto t1
goto t2

找到問題了!
原來JICD1~3不須調整,還是放在1&2 (MCU DEBUGE)位置
MPLAB設定Programmer(Programmer-->Select Programmer-->MPLAB ICD2)
說明書也沒寫清楚,害我忙了半天!

以下是我在program mode下要燒陸產生的錯誤.
程式是WAP002的範例程式ANS6中的WAP002.mcp
板子是app001 ,Jumper JICD1~3也都放在2&3 (PROGRAMER),MPLAB 也設定在PROGRAMER

build all都ok,program時卻不成功,請問是什麼原因?

Connecting to MPLAB ICD 2
...Connected
Setting Vdd source to target
ICDWarn0020: Invalid target device id (expected=0x21, read=0x0)
...Reading ICD Product ID
Running ICD Self Test
...Passed
MPLAB ICD 2 Ready
Connecting to MPLAB ICD 2
...Connected
Setting Vdd source to target
ICDWarn0020: Invalid target device id (expected=0x21, read=0x0)
...Reading ICD Product ID
Running ICD Self Test
...Passed
MPLAB ICD 2 Ready
Erasing Target Device...
ICDWarn0052: MPLAB ICD 2 cannot validate a target device. Please make sure that the target device is connected and properly powered. Select "OK" to continue, or "CANCEL" to abort the operation
...Erase Succeeded
MPLAB ICD 2 Ready
Programming Target...
ICDWarn0052: MPLAB ICD 2 cannot validate a target device. Please make sure that the target device is connected and properly powered. Select "OK" to continue, or "CANCEL" to abort the operation
ICDWarn0035: Debug mode must be disabled. Disable debug mode or cancel?
...Validating configuration fields
...Erasing Part
...Programming Program Memory (0x0 - 0x1C6F)
...Programming User IDs
Verifying...
ICDWarn0052: MPLAB ICD 2 cannot validate a target device. Please make sure that the target device is connected and properly powered. Select "OK" to continue, or "CANCEL" to abort the operation
...Program Memory
ICD0161: Verify failed (MemType = Program, Address = 0x0, Expected Val = 0xEFBF, Val Read = 0x0)
ICD0275: Programming failed.
MPLAB ICD 2 Ready