; Ford EDIS module variables
adv_rpm_tbl	ds	16
ign_delay	ds	1	; number of timer ints to delay
rpm_tbl_bins	equ	15	; table has 15 bins, each representing 200 rpm, 3600rpm max
min_rpm_tbl	equ	4	; min 400 RPM
ign_pin		equ	2	; Port A pin 2 for module SAW

; equation for advance = 1536us - (25.6 * degrees advance)
; this means that you can have a max of 59 degrees advance, where the SAW is 25.6 us long
; a 0 length SAW would be 10 degrees BTDC, not 60, since this is the limp value
; resolution of software timer int is .1ms or 100us.
; this gives us a timing resolution of 3.90625 degrees -- 4 degrees
; there are 15 possible advance values, other than 10 BTDC, with 100us resolution
;
; the table below is calculated for 10 degrees base timing, if you change the base
; timing by advancing or retarding the pickup, it changes the values below.
;
;ADV	CALC PW		PW	REAL ADV
; 10	0		0	10
; 14	102.4us		100us	3.90625
; 18	204.8us		200us	7.8125
; 22	307.2us		300us	11.71875
; 26	409.6us		400us	15.625
; 30	512.0us		500us	19.53125
; 34	614.4us		600us	23.4375
; 38	716.8us		700us	27.34375
; 42	819.2us		800us	31.25
; 46	921.6us		900us	35.15625
; 50	1024.0us	1000us	39.0625
; 54	1126.4us	1100us	42.96875
; 58	1228.8us	1200us	46.875
; 62	1331.2us	1300us	50.78125
; 66	1433.5us	1400us	54.6875
; 70	1536.0us	1500us	58.59375