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-rw-r--r--test/gputils/standalone/test_stand_alone.asm53
1 files changed, 53 insertions, 0 deletions
diff --git a/test/gputils/standalone/test_stand_alone.asm b/test/gputils/standalone/test_stand_alone.asm
new file mode 100644
index 0000000..27e607a
--- /dev/null
+++ b/test/gputils/standalone/test_stand_alone.asm
@@ -0,0 +1,53 @@
+ list p=16f877
+ #include <p16f877.inc>
+
+ __CONFIG _CP_ALL & _WDT_OFF & _BODEN_OFF & _PWRTE_ON & _RC_OSC & _WRT_ENABLE_ON & _LVP_ON & _CPD_OFF
+
+;**********************************************************************
+BANK0 = 0x0
+BANK1 = 0x80
+BANK2 = 0x100
+BANK3 = 0x180
+
+;**********************************************************************
+w_saved EQU 0x70 ; variable used for context saving
+status_saved EQU 0x71 ; variable used for context saving
+index EQU 0x20
+
+;**********************************************************************
+ ORG 0x000 ; processor reset vector
+ movlw high start ; load upper byte of 'start' label
+ movwf PCLATH ; initialize PCLATH
+ goto start ; go to beginning of program
+
+;**********************************************************************
+ ORG 0x004 ; interrupt vector location
+ movwf w_saved
+ movfw STATUS
+ movwf status_saved
+
+ bcf INTCON,2 ; reset TMR0 interrupt flag
+
+ movfw status_saved
+ movwf STATUS
+ swapf w_saved,f
+ swapf w_saved,w
+ retfie ; return from interrupt
+
+;**********************************************************************
+start
+; initialize microchip
+ clrf TMR0 ^ BANK0
+ clrf INTCON ^ BANK0
+ banksel TRISA ; bank 1
+ movlw B'11010100' ; set prescaler at 32 (32768 Hz / 4 / 256 / 32 = 1 Hz)
+ movwf OPTION_REG ^ BANK1 ; and start TMR0 (internal source clock)
+ movlw B'00000110' ; set PORTA and PORTE to be all digital
+ movwf ADCON1 ^ BANK1
+ banksel INTCON ; back to bank 0
+ bsf INTCON,T0IE ; enable TMR0 interrupt
+ bsf INTCON,GIE ; enable all interrupts
+
+; loop forever
+ goto $
+ END ; directive 'end of program'