The following is a script I wrote to read PIA ports, specifically port A of IC5 on a Turkey Shoot board.

Interestingly enough this script worked, until I fixed the board.  Now that the board is fixed the script doesn't work.

 

My Chip Selects are correct, and the R/W works.  The game works in test mode too.  What did I miss?

 

Thanks,

Kev

 

 

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

! I/O TEST

!

! PIA Test Port A IC5

!

! Reg1 = Temporary offset from main

! Reg2 = Base address of PIA

!

! This routine sets Port A as Inputs which are routed to the Data Bus.

! The Intterupts are not turned on & thus don't require servicing for our

! test.

!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

PROGRAM IOTST

REG2 = C980

SETPORT:

DPY-SETUP IC5 PORT A

EXECUTE DELAY ! Call delay for display

WRITE @ REG2 = 0 ! Write 0's to Data Direction Reg A

REG1 = REGF

INC REG1

INC REG1 ! Set REG1 to base address + 2

WRITE @ REG1 = 0 ! Write 0's to DDRB

DEC REG1 ! Set Reg1 to base +1

WRITE @ REG1 = 4 ! Write 4 to Port A CRA

INC REG1

INC REG1 ! Set Reg1 to base +3

WRITE @ REG1 = 4 ! Write 4 to Port B CRA

DPLOOP:

DPY- TEST COIN DOOR BUTTONS

READ @ REG2

IF REGE AND 40 = 40 GOTO SLAMIN

IF REGE AND 20 = 20 GOTO RIGHTC

IF REGE AND 10 = 10 GOTO RIGHTC

IF REGE AND 8 = 8 GOTO LEFTC

IF REGE AND 4 = 4 GOTO HSRESET

IF REGE AND 2 = 2 GOTO ADVANCE

IF REGE AND 1 = 1 GOTO AUTOM

GOTO DPLOOP

SLAMIN:

DPY-SLAM TILT #

EXECUTE DELAY

GOTO DPLOOP

RIGHTC:

DPY-RIGHT COIN #

EXECUTE DELAY

GOTO DPLOOP

LEFTC:

DPY-LEFT COIN #

EXECUTE DELAY

GOTO DPLOOP

HSRESET:

DPY-HIGH SCORE RESET#

EXECUTE DELAY

GOTO DPLOOP

ADVANCE:

DPY-ADVANCE PUSHED#

EXECUTE DELAY

GOTO DPLOOP

AUTOM:

DPY-AUTO IS MANUAL PRESSED #

EXECUTE DELAY

GOTO DPLOOP

----- Original Message -----

From: John Robertson

To: techToolsList@flippers.com

Sent: Saturday, March 09, 2002 2:40 PM

Subject: Re: 9010A tricks

I thought I had too, or perhaps it was in email, still it is up on the site now... look for ID-A-DAT.s and .H for the two files (.H is compiled)

John :-#)#

At 12:53 PM 09/03/2002 -0500, Kev wrote:

Forgive me, I thought John posted about a program that would let the 9010A ID Data/Address lines with the probe.  Can anyone point me to that again?

 

As an extension of that thought is there a function that would allow me to probe a point and generate a "memory Map" to tell me what address that point is active?

 

Thanks,

Kev