kludge’s TF534 build

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

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8 Bit Dreams
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Re: kludge’s TF534 build

Post by 8 Bit Dreams » Fri Jun 28, 2019 12:56 pm

This may be a crap CPU, have similar issues with at least 15x 33Mhz CPUs ive bought recently.
Try to swap it out for known good one :roll:

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Re: kludge’s TF534 build

Post by kludge » Fri Jun 28, 2019 1:00 pm

8 Bit Dreams wrote:
Fri Jun 28, 2019 12:56 pm
This may be a crap CPU, have similar issues with at least 15x 33Mhz CPUs ive bought recently.
Try to swap it out for known good one :roll:
I’ve tried with one Motorola and one Freescale, both EC variants rated for 40 MHz. Guess I’ll try swapping in the Motorola that sits in my working TF534 (also EC/40 MHz) to see if that works.

I REALLY hope that it isn’t the CPU
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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Re: kludge’s TF534 build

Post by kludge » Fri Jun 28, 2019 1:43 pm

The Freescale CPU works fine at 50 MHz in the other TF534, so that wasn’t it. Phew.

I’ll reflow the bus CPLD later to see if I have an intermittent connection somewhere.
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 » Sat Jun 29, 2019 12:32 am

Are you using a used CPU socket? I've had glitches with dirty / loose socket pin receptacles. To test this I put my CPU in at a slight angle so that the CPU pins make good contact. After verifying that it worked, I sprayed the socket with contact cleaner and the glitches went away.

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kludge
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Re: kludge’s TF534 build

Post by kludge » Sat Jun 29, 2019 9:22 pm

chue wrote:
Sat Jun 29, 2019 12:32 am
Are you using a used CPU socket? I've had glitches with dirty / loose socket pin receptacles. To test this I put my CPU in at a slight angle so that the CPU pins make good contact. After verifying that it worked, I sprayed the socket with contact cleaner and the glitches went away.
I'm making my own out of brand new female headers. I've cut a jig for it in a CNC router and they seem solid enough. I've replaced the CPU in the first one multiple times without any glitches, so I don't think that's it.
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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