kludge’s TF534 build

TF534 - 68030 + More RAM Board (More compatible with amiga hardware)

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dalek
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Re: kludge’s TF534 build

Post by dalek » Tue May 28, 2019 1:06 am

I'd check your solder joints on the IDE header pins - I've had cases where the solder mask was a bit iffy and you get a short to ground with some of the through holes. I'm guessing you've already checked over the cplds a hundred times? Why not post a close-up pic of both sides of the board - maybe someone can spot something...

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kludge
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Re: kludge’s TF534 build

Post by kludge » Tue Jun 11, 2019 8:45 pm

So, I've reflowed the RAM CPLD, and now it's somewhat working. KS 3.1.4 detects the CF card and boots from it happily (albeit with quite a long delay on power up, ~48 seconds from power up until I get to the kickstart menu when holding down both mouse buttons). The weird thing is that neither KS 2.05, 3.1 nor DiagROM detects the CF card. I might have a bad solder joint somewhere else, but this is really weird. Crazy fast, though :D
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A kludge is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain.

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kludge
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Re: kludge’s TF534 build

Post by kludge » Tue Jun 11, 2019 8:48 pm

dalek wrote:
Tue May 28, 2019 1:06 am
I'd check your solder joints on the IDE header pins - I've had cases where the solder mask was a bit iffy and you get a short to ground with some of the through holes. I'm guessing you've already checked over the cplds a hundred times? Why not post a close-up pic of both sides of the board - maybe someone can spot something...
Yeah, I might post some close ups if reflowing the BUS CPLD doesn't work, but I've looked REALLY close and can't see any bridges anywhere, so the only thing I can think of is that there's some pin somewhere that hasn't got a good enough connection.
A kludge is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain.

My lack of focus:
[ 3 * Amiga 500 ][ Amiga 500+ ][ Amiga 600HD ][ Amiga 2000 ][ Amiga 4000/030 w/ 64 MB RAM hack ][ CD32 (NTSC) ][ VIC-20 ][ 4 * C64 Breadbin ][ 2 * C64C ][ 2 * C128 ][ Mac Classic ][ Mac Classic II ][ Mac Colour Classic ]

terriblefire
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Re: kludge’s TF534 build

Post by terriblefire » Tue Jun 11, 2019 8:49 pm

Sounds like the resistors maybe a bit squirly. 2K or 1K?
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kludge
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Re: kludge’s TF534 build

Post by kludge » Tue Jun 11, 2019 8:51 pm

terriblefire wrote:
Tue Jun 11, 2019 8:49 pm
Sounds like the resistors maybe a bit squirly. 2K or 1K?
The resistors and resistor networks are 1K :oops:

But it seems to work fine with 1K resistors according to... Was it 8 Bit Dreams that used them?
A kludge is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain.

My lack of focus:
[ 3 * Amiga 500 ][ Amiga 500+ ][ Amiga 600HD ][ Amiga 2000 ][ Amiga 4000/030 w/ 64 MB RAM hack ][ CD32 (NTSC) ][ VIC-20 ][ 4 * C64 Breadbin ][ 2 * C64C ][ 2 * C128 ][ Mac Classic ][ Mac Classic II ][ Mac Colour Classic ]

terriblefire
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Re: kludge’s TF534 build

Post by terriblefire » Tue Jun 11, 2019 8:53 pm

kludge wrote:
Tue Jun 11, 2019 8:51 pm
terriblefire wrote:
Tue Jun 11, 2019 8:49 pm
Sounds like the resistors maybe a bit squirly. 2K or 1K?
The resistors and resistor networks are 1K :oops:

But it seems to work fine with 1K resistors according to... Was it 8 Bit Dreams that used them?
i use 2K2s
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kludge
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Re: kludge’s TF534 build

Post by kludge » Tue Jun 11, 2019 8:59 pm

terriblefire wrote:
Tue Jun 11, 2019 8:53 pm
i use 2K2s
Yeah, I know. And I know the BOM says 2K2, but I already had a stash of 1K's and the import fees would be freakishly high for just a resistor order. And I'm sure one of the builders said that they were using them.

Oh well... Might try to swap them out.

Are the values of the resistors and resistor networks equally important? I can find SMD resistors easily here in Sweden (I might even have some in a box somewhere), but the 2K2 RN's are much harder to find with reasonable shipping and import fees.
A kludge is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain.

My lack of focus:
[ 3 * Amiga 500 ][ Amiga 500+ ][ Amiga 600HD ][ Amiga 2000 ][ Amiga 4000/030 w/ 64 MB RAM hack ][ CD32 (NTSC) ][ VIC-20 ][ 4 * C64 Breadbin ][ 2 * C64C ][ 2 * C128 ][ Mac Classic ][ Mac Classic II ][ Mac Colour Classic ]

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chue
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Re: kludge’s TF534 build

Post by chue » Tue Jun 11, 2019 11:48 pm

I used 1K resistor networks in my build. As for the other resistors, I used 2.2K and 47K, per the BOM.

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kludge
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Re: kludge’s TF534 build

Post by kludge » Wed Jun 12, 2019 7:48 am

chue wrote:
Tue Jun 11, 2019 11:48 pm
I used 1K resistor networks in my build. As for the other resistors, I used 2.2K and 47K, per the BOM.
I might try to swap out the 1K 0603’s for 2K2’s and see if it makes a difference.
A kludge is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain.

My lack of focus:
[ 3 * Amiga 500 ][ Amiga 500+ ][ Amiga 600HD ][ Amiga 2000 ][ Amiga 4000/030 w/ 64 MB RAM hack ][ CD32 (NTSC) ][ VIC-20 ][ 4 * C64 Breadbin ][ 2 * C64C ][ 2 * C128 ][ Mac Classic ][ Mac Classic II ][ Mac Colour Classic ]

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kludge
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Re: kludge’s TF534 build

Post by kludge » Wed Jun 12, 2019 8:04 am

kludge wrote:
Tue Jun 11, 2019 8:59 pm
terriblefire wrote:
Tue Jun 11, 2019 8:53 pm
i use 2K2s
Are the values of the resistors and resistor networks equally important? I can find SMD resistors easily here in Sweden (I might even have some in a box somewhere), but the 2K2 RN's are much harder to find with reasonable shipping and import fees.
Answering my own own question after opening up the schematics: The RN's are probably fine as they are. :)
A kludge is a workaround or quick-and-dirty solution that is clumsy, inelegant, inefficient, difficult to extend and hard to maintain.

My lack of focus:
[ 3 * Amiga 500 ][ Amiga 500+ ][ Amiga 600HD ][ Amiga 2000 ][ Amiga 4000/030 w/ 64 MB RAM hack ][ CD32 (NTSC) ][ VIC-20 ][ 4 * C64 Breadbin ][ 2 * C64C ][ 2 * C128 ][ Mac Classic ][ Mac Classic II ][ Mac Colour Classic ]

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