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    Hi, IÂ'm trying to use SPI in AT89S8252. Problem is that I canÂ't write to SPDR. SPDR doesnÂ't receive data but still software sets SPIF flag. Also I can write the 00h value of the SPDR to ie. R2...
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    I have this code AREA datos, DATA, READWRITE long EQU 7*4 serie DCD 1, 2, 4, 6, 8, 7, 9 resul DCB 0 AREA prog, CODE, READONLY ENTRY mov r0, #0 eor r1, r1, r1 ;result variable ldr r2, =serie...
  • Problem with load and store data
    Hey all! I'm using Keil-uV3. Chip LPC2214 (Philips Semiconductors) I have an external memory device connected to the expansion board. The external device is using /CS0 and /CS1. Memory bank is 32 bits...
  • view memory after loading data
    Hello i am writing an array of asci char to memory and need to check they are in the correct position when in debug mode MOV A,#030H MOV R1,#060H MOV @R1,A ARRAY: INC A INC R1 CJNE A,#03AH,ARRAY I...