[Techtoolslist] Cat box, and fluke usage..

[John Robertson]

Kevin Moore wrote:

> 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      -----------------------------------------------------------------

>

>

According to this map 0000h and 0001h are x& ycoord and as such may not 
store data, the RAM starts at 0003h through 3fff.

I would run the RAM test from 0003h to 07ffh, then 0800h to 0fffh, then 
1000h to 17ffh and so on.

Does the game have  aworking self test?

John :-#)#

>

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

>     <mailto: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 <http://www.flippers.com> "Old

>         pinballers never die, they just flip out"

>

>

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>

>

>



-- 
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"