read memorybank

Blue Bit

HI,

how can i get data from memory bank ? fill works fine but reading isnt work.


:main
bank $10
mov tmp,rb
mov $1F,tmp ;fill
mov tmp,rb
mov $1E,tmp

mov rc,$1F ??????? ;read

jmp:main


thanks for help

Bean

You should post your COMPLETE program. That would answer alot of questions. (like what chip your are using).

I suspect that you have not setup port RC as outputs.

Bean.

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Blue Bit

HI Bean,

ok. sorry

;=======================================================================
;TITLE: Mem Test.src
;
;PURPOSE: Simple Mem example SX28AC/DP
;
;AUTHOR: A S
;
;REVISIONS: 1.1

---

50 MHZ

---

;
; no sync
; 08.05.2005
;
;
;CONNECTIONS:
; RA Out
; RB Input
; RC Out
;
;

---

DEVICE DIRECTIVES

---

DEVICE SX28,OSCHS3,TURBO

IFDEF __SASM ;SASM Directives
DEVICE STACKX,OPTIONX
IRC_CAL IRC_FAST

ELSE ;Parallax Assember Directives
DEVICE STACKX_OPTIONX
ENDIF
FREQ 50_000_000


RESET Main

org $08
tmp ds 1


org $000
Main

;

---

Datenspeicher auf NULL setzen

---

clr fsr

:ClearData
sb fsr.4
Setb fsr.3
clr ind
ijnz fsr,:ClearData
;

---

end

---

;Port IO Setzen
mov !ra, #%00000000 ;Port A output LED Port RA3 0=an 1= aus
mov ra,#%00000000 ;Port A all bit output 0.
mov !rb, #%11111111 ;Port B input
mov rb,#%00000000 ;Port B all bit input 0.
mov !rc, #%00000000 ;Port C output
mov rc,#%00000000 ;Port C all bit output 0.

;

---

end

---

;Initialisierung
mov fsr,#$FF

;Hauptschleife
:main
mov rb,#%11111111

bank $10 ; Speicherbank aktiv
mov tmp,rb ; lese und Hilfsvariable legen
mov $1F,tmp ; speicher ab

mov tmp,rb
mov $1E,tmp
mov tmp,rb
mov $1D,rb
mov tmp,rb
mov $1C,rb
mov tmp,rb
mov $1B,rb
mov tmp,rb
mov $1A,rb
mov tmp,rb
mov $19,rb
mov tmp,rb
mov $18,rb
mov tmp,rb
mov $17,rb
mov tmp,rb
mov $16,rb
mov tmp,rb
mov $15,rb
mov tmp,rb
mov $14,rb
mov tmp,rb
mov $13,rb
mov tmp,rb
mov $12,rb
mov tmp,rb
mov $11,rb
mov tmp,rb
mov $10,rb




mov rc,#$12
mov rc,#$13
mov rc,#$14
mov rc,#$15
mov rc,#$16
mov rc,#$17
mov rc,#$18
mov rc,#$19
mov rc,#$1A
mov rc,#$1B
mov rc,#$1C
mov rc,#$1D
mov rc,#$1E
mov rc,#$1F

jmp :main