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Untitled Document
Listing 5ýWant to know how to read a ý9346 using assembly language? Hereýs your huckleberry.

#asm nodebug
clock_9346::
h2l:
ioi	bit	EESK,(hl)
		jr	z,h2l
l2h:
ioi	bit	EESK,(hl)
		jr	nz,l2h
		ret
#endasm

/**********************************/
void emu_9346()
{
#asm
;
; code to emulate the 93C46
;
		ld	c,1
		ld	hl,EEPORT

		;
		; start bit
		;
emu_1:		
		call	clock_9346
ioi		bit	EEDI,(hl)
		jr	z,emu_1
		;
		; read 10 - read command
		;

emu_2:		
		call	clock_9346
ioi		bit	EEDI,(hl)
		jr	z,emu_1

emu_3:		
		call	clock_9346
ioi		bit	EEDI,(hl)
		jr	nz,emu_1

		;
		; six clocks for address
		;

		ld	b,6
emu_4:
		call	clock_9346
		djnz	emu_4

		;
		; send 0
		;

		xor	a
ioi		ld	(EEDO),a

		;
		; send word
		;

		ld	a,RT_FDLED0LED1
		ld	b,16

emu_5:
		call	clock_9346
ioi		ld	(EEDO),a
		rlca
		djnz	emu_5

		dec	c
		jp	p,emu_1

		xor	a
ioi		ld	(EEDO),a

#endasm
}
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