P4 processor info

[Peter Gargano]

steve ravet wrote:

> Does the HUD code really fit from 5800-58ff?

I only have the word of the (unknown) BUA dissambler!
For example...

;
; check IF HEADS UP CONNECTED
; U/D Motor position fm HUD
;
LDAA    L0033           ; MINOR LOOP MD word 1
BPL     LF5BA           ; If no H/U, B/P 12U update
                        ; ... else
JSR     L5803           ; TO HEADS UP <---------


> Do you have any more info about the region 3cf0-3fff?  
> I'd like to fill it in a little more.

        ORG     $3FC0

L3FC0   BSZ 2   ; Ref Period Timer
L3FC2   BSZ 2   ; Timer #1 (Input 5)
L3FC4   BSZ 2   ; Timer #2 (Input 6)
L3FC6   BSZ 2   ; Cntr #1 (Cum Pulses)
L3FC8   BSZ 2   ; Cntr #2 Spark PERIOD, (Spark Feed Bk, in 3) - PA2 counter
L3FCA   BSZ 2   ; Cntr #3 (16.5 Khz cntr if In 4 is hi)
L3FCC   BSZ 2   ; PW Mod cnt'r, (P8) ARC
L3FCE   BSZ 2   ; ??? DELAY - EFI DLY

        ORG     $3FD0

L3FD0   BSZ 2   ; To MCU ? - Sync Fuel = 0 - BPW = 5 msec
L3FD2   BSZ 2   ; EGR PW Out Cnt'r
L3FD4   BSZ 2   ; PW Mod Cnt'r, Acell Enrich
L3FD6   BSZ 2   ; TCC PW Cnt'r
L3FD8   BSZ 2   ; CCP PW Out Cnt'r
L3FDA   BSZ 2   ; Mass Air B.U. PW TMR
L3FDC   BSZ 2   ; Spark Dwell Counter
        BSZ 2   ; FE

        ORG     $3FE0

L3FE0   BSZ 2   ; Cntr #4 (Cum pulses on in 5)
        BSZ 2
L3FE4   BSZ 2   ; B Cnt'r Bgn nxt Dwell
L3FE6   BSZ 2   ; Spark Dwell Counter
L3FE8   BSZ 2   ; CURRENT EST FALL - LAST EST FALL
        BSZ 2   ; FA
L3FEC   BSZ 2   ; B Cnt'r last ref
        BSZ 2

        ORG     $3FF0

        BSZ 2   ; F0
L3FF2   BSZ 2   ; Async PW Cnt'r
        BSZ 2   ; F4
L3FF6   BSZ 2   ; EST FALL CNT'R (Time Fm Ref to Fire IGN Cnt'r)
L3FF8   BSZ 2   ; PA1 (counter)
L3FFA   BSZ 2   ; Get MCU Status Reg.
L3FFC   BSZ 2   ; MCU CSR
        BSZ 2   ; FE
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