[Techtoolslist] Cat box, and fluke usage..

[Kevin Moore]

I hooked up my fluke 9010 and did a bus check, I'm assuming that would be
the easiest/fastest way to do a busy check on the board. Results came back
good.

Now fi I read your email correctly, you want me to use a different memory
location. That makes sense.

However the memory maps have always confused me a bit.

The game is using AM9016EPC memory, which I'm having a problem finding a
datasheet for atm.



           HEX        R/W   D7 D6 D5 D4 D3 D2 D2 D0  function
   17      ---------+-----+------------------------+------------------------
   18      0000             D  D  D  D  D  D  D  D   XCOORD
   19      0001             D  D  D  D  D  D  D  D   YCOORD
   20      0002             D  D  D                  BIT MODE DATA
   21      ---------+-----+------------------------+------------------------
   22      0003-033F        D  D  D  D  D  D  D  D   Working RAM
   23      0340-3D3F        D  D  D  D  D  D  D  D   Screen RAM
   24      3D40-3FFF        D  D  D  D  D  D  D  D   Working RAM
   25      ---------+-----+------------------------+------------------------
   26      4000-403F    R   D  D  D  D  D  D  D  D   EARD*  read from
non-volatile memory
   27      ---------+-----+------------------------+------------------------
   28      5000         R                        D   coin AUX   (CTRLD* set low)
   29      5000         R                     D      coin LEFT  (CTRLD* set low)
   30      5000         R                  D         coin RIGHT (CTRLD* set low)
   31      5000         R               D            SLAM       (CTRLD* set low)
   32      5000         R            D               SPARE      (CTRLD* set low)
   33      5000         R         D                  SPARE      (CTRLD* set low)
   34      5000         R      D                     COCKTAIL   (CTRLD* set low)
   35      5000         R   D                        SELF-TEST  (CTRLD* set low)
   36      5000         R               D  D  D  D   HDIR   (CTRLD* set high)
   37      5000         R   D  D  D  D               VDIR   (CTRLD* set high)
   38      ---------+-----+------------------------+------------------------
   39      5001         R                        D   SHIELD 2
   40      5001         R                     D      SHIELD 1
   41      5001         R                  D         FIRE 2
   42      5001         R               D            FIRE 1
   43      5001         R            D               SPARE      (CTRLD* set low)
   44      5001         R         D                  START 2
   45      5001         R      D                     START 1
   46      5001         R   D                        VBLANK
   47      ---------+-----+------------------------+------------------------
   48      6000-600F    W               D  D  D  D   base_ram*
   49      6200-621F    W   D  D  D  D  D  D  D  D   COLORAM*
   50      6400         W                            INTACK*
   51      6600         W               D  D  D  D   EARCON
   52      6800         W   D  D  D  D  D  D  D  D   STARTLG (planet frame)
   53      6A00         W                            WDOG*
   54      ---------+-----+------------------------+------------------------
   55      6C00         W            D               START LED 1
   56      6C01         W            D               START LED 2
   57      6C02         W            D               TBSWP*
   58      6C03         W            D               SPARE
   59      6C04         W            D               CTRLD*
   60      6C05         W            D               COINCNTRR
   61      6C06         W            D               COINCNTRL
   62      6C07         W            D               PLANET
   63      ---------+-----+------------------------+------------------------
   64      6E00-6E3F    W   D  D  D  D  D  D  D  D   EARWR*
   65      7000-701F        D  D  D  D  D  D  D  D   IOS2* (Pokey 2)
   66      7800-781F        D  D  D  D  D  D  D  D   IOS1* (Pokey 1)
   67      8000-EFFF    R   D  D  D  D  D  D  D  D   ROM
   68      -----------------------------------------------------------------



2009/11/25 Kevin Moore <talon.k at gmail.com>


> Well I was following the seqeunce given in the manual, which is Address

> lines, then Data lines, then Ram etc..

>

> I'll run the bus sigs now, and see what I get.

>

> Thanks,

>

> Kevin

>

>

> 2009/11/25 John Robertson <jrr at flippers.com>

>

> Kevin Moore wrote:

>>

>>> Hi all, in my quest to learn more about using these tools, I've actually

>>> come up with a problem, and could use a little explanation.

>>>

>>> I'm working on a liberator board, and was using the atari cat box. The

>>> first

>>> two tests in the liberator manual have you check address lines. Well

>>> those

>>> checked out good. Next was the Data lines. This is where things fell

>>> apart,

>>> and I'm not sure what I'm seeing.

>>>

>>> Punch in address 0000, and write AA check the D0-D7 lines going to the

>>> ls245

>>> well half the incoming lines are the wrong state, and the output of the

>>> ls245 is non existent. Ie pins 2-9 have no output.

>>>

>>> So I hook up my fluke 9010a thinking there may be something wrong with

>>> the

>>> catbox, since this is the first time I've used it. Did the same basic

>>> setup

>>> wddis grounded, and Φ0 Φ2 shorted together. Do a write to 0000 with AA

>>> and

>>> use my logic probe to check. Same results.

>>>

>>> Am I to assume Bad memory at location 0000.??

>>>

>>>

>> Yes.

>>

>> Did you do the BUS Test first? That will show if any address or data lines

>> are misbehaving.

>>

>> If BUS Test is OK, and you get this problem for RAM @ 0000h, then try the

>> next RAM set - say @ 0800h or 1000h (if RAM present - check Memory Map). If

>> other RAM all checks OK, or ANY RAM checks OK, then the RAM @ 0000h is

>> certainly suspect.

>>

>> If the RAM is 4-bit, then which bits are locked will tell you which RAM to

>> replace.

>>

>> John :-#)#

>>

>> --

>> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call

>> (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)

>>                www.flippers.com "Old pinballers never die, they just flip

>> out"

>>

>>

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>

>

>