Re: Major Havoc fluke 9010a rom testing

Make real sure the reset line isn't doing anything. Make sure other
processor is off board.

On Tue, Jan 22, 2013 at 10:39 PM, Kevin Moore <talon.k@gmail.com> wrote:

> Yes it is plugged into the alpha socket. You are correct that 1740 is
> write only.. As of yet, trying to use the fluke to write 00 01 02 etc..
> hasn't changed the states of the MMUPAGE0 or MMUPAGE1
>
> Kevin
>
>
>
> On Tue, Jan 22, 2013 at 9:21 PM, vectorlist-steve <
> vectorlist@arcadehacking.com> wrote:
>
>> Hey Kevin, you do have the fluke plugged into the "Alpha" (primary)
>> processor socket right????
>>
>> 0x1740 address should be WRITE ONLY according to the mame source and only
>> latches the two LSB bits.
>>
>> http://mamedev.org/source/src/mame/drivers/mhavoc.c.html
>>
>> If I have time later I will check one of my MH boards and post the
>> results.
>>
>>
>>
>> On 1/22/2013 5:51 PM, Kevin Moore wrote:
>>
>> Well, I must be doing something wrong..
>>
>> I do a write to 1740 = 00
>> then do a rom 2000-3FFF
>>
>> I come up with a 2057
>>
>> Do a write to 1740 = 01
>>
>> Rom 2000-3FFF still get 2057
>>
>> So then I did a Read at 1740 and it's showing FF no matter what I write
>> to it.
>>
>> This is a known working board that I'm trying to do this on. I should be
>> able to do this right?
>>
>> Kevin
>>
>>
>> On Tue, Jan 22, 2013 at 6:16 PM, Jess Askey <jess@askey.org> wrote:
>>
>>> Yes, page 0 and 1 are in one ROM and page 2 and 3 in the other. I
>>> didn’t think about that. J
>>>
>>>
>>>
>>> *From:* owner-vectorlist@vectorlist.org [mailto:
>>> owner-vectorlist@vectorlist.org] *On Behalf Of *Kevin Moore
>>> *Sent:* Tuesday, January 22, 2013 5:26 PM
>>>
>>> *To:* vectorlist@vectorlist.org
>>> *Subject:* Re: VECTOR: Major Havoc fluke 9010a rom testing
>>>
>>>
>>>
>>> That's what I was thinking.
>>>
>>> But the sigs are for the two roms.. will I need to split the roms, and
>>> run sig calc on the halves to get the right sigs?
>>>
>>> Kevin
>>>
>>> On Tue, Jan 22, 2013 at 6:05 PM, Jess Askey <jess@askey.org> wrote:
>>>
>>> The 2 ROM’s are broken down into 4 pages… so in order to access them….
>>>
>>>
>>>
>>> Page 0: Write 00 to 0x1740 then read 0x2000-3fff
>>>
>>> Page 1: Write 01 to 0x1740 then read 0x2000-3fff
>>>
>>> Page 2: Write 02 to 0x1740 then read 0x2000-3fff
>>>
>>> Page 3: Write 03 to 0x1740 then read 0x2000-3fff
>>>
>>>
>>>
>>> That should do it for you!
>>>
>>>
>>>
>>> *From:* owner-vectorlist@vectorlist.org [mailto:
>>> owner-vectorlist@vectorlist.org] *On Behalf Of *Kevin Moore
>>> *Sent:* Tuesday, January 22, 2013 4:05 PM
>>> *To:* vectorlist@vectorlist.org
>>> *Subject:* Re: VECTOR: Major Havoc fluke 9010a rom testing
>>>
>>>
>>>
>>> I believe you are correct about FFFF being the range of the 6502, which
>>> makes it all the more odd that Quarter Arcade has such a high address
>>> listed.
>>>
>>> http://tech.quarterarcade.com/tech/VM.aspx?g=1669&set=mhavoc
>>>
>>> Probably just a mistake.
>>>
>>> The Memory map on the MH Schematics show the Range, and for the Rom/s
>>> in question the range should be 2000-3FFF but you have to page between the
>>> two somehow, and that's were I'm failing.
>>>
>>> It looks like the address 1740 is used to page between the two roms, but
>>> since I've never had to do that, I'm unable to verify the roms.
>>>
>>> The Rom at 8000-BFFF and C000-FFFF are not paged and I can check just
>>> fine. Mind you that this is all on the Alpha processor. Not the Gamma I
>>> haven't gotten that far as of yet.
>>>
>>> Kevin
>>>
>>> On Tue, Jan 22, 2013 at 3:55 PM, Andre Huijts <a.huijts@upcmail.nl>
>>> wrote:
>>>
>>> Its not outside the Fluke's range, it's outside the 6502 range....8 bit
>>> processor is FFFF max.
>>> Or am I missing something ?
>>>
>>>
>>>
>>> Op 22 jan. 2013 om 21:54 heeft Kevin Moore <talon.k@gmail.com> het
>>> volgende geschreven:
>>>
>>>
>>> > So I'm trying to work on a major havoc, but I'm not to clear on how to
>>> run rom checks on the paged roms..
>>> >
>>> > Quarter Arcades site has the rom range 10000-13FFF for 136025-215, but
>>> the address range is outside the flukes range. Looks like to me the
>>> actually address should start at 2000-3FFF. I'm not at all familiar with
>>> the MMUPAGE0 addressing.
>>> >
>>> > Any pointers, or information I can read?
>>> >
>>> > Thanks,
>>> >
>>> > Kevin
>>> >
>>>
>>>
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>>>
>>>
>>>
>>>
>>
>>
>>
>

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Received on Tue Jan 22 23:42:19 2013