;----------------------------------------------------------------------------------------
; port C setup for SD card (and also for keyboard on port C0 C1 and LCD on port B0 to B5
;----------------------------------------------------------------------------------------
setportc:			

; the N8VEM startup code sets port A=in, B=out and C=in
; change this to port A=out, B=out and C=in
; Any pins can be used, but suggest A0 A1 A2 for the outputs and C2 for the input


	ld 	a,10001001B		; a=out b=out c=in  http://www.datasheetcatalog.org/datasheet/oki/82C55.pdf p11
	out 	(99),a			; 99=control
	ld 	a,00000000B		; put zero in A
	out	(96),a			; 96=port A clear to zero
	out	(97),a			; 97=port B clear to zero
					; in a,(98) reads port C. Keyboard uses C0 and C1, so use C2 mask with 00000100B

	ret