HELP again- GOLD CARD

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Silvester
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Re: HELP again- GOLD CARD

Post by Silvester »

Derek_Stewart wrote:There was however failures due user intervention, after removal of the CPU heatsink to look at the CPU serial number. This was detailed in QL Today, who never contacted me to establish if this was correct.
What sort of heatsink did you use on Q60?

BTW did anyone ever try using 68060/ 68040 adaptor on Q40? (https://amiga.technology/2021/01/18/680 ... formation/)


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Peter
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Re: HELP again- GOLD CARD

Post by Peter »

Silvester wrote:BTW did anyone ever try using 68060/ 68040 adaptor on Q40? (https://amiga.technology/2021/01/18/680 ... formation/)
The Q40 mainboard is already prepared for 68060. It just requires the extra CPU pin headers and a 3.3V voltage regulator to be placed. And a different oscillator, if it is going to be a 66 MHz machine, rather than 80 MHz.


Silvester
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Re: HELP again- GOLD CARD

Post by Silvester »

Peter wrote:
Silvester wrote:BTW did anyone ever try using 68060/ 68040 adaptor on Q40? (https://amiga.technology/2021/01/18/680 ... formation/)
The Q40 mainboard is already prepared for 68060. It just requires the extra CPU pin headers and a 3.3V voltage regulator to be placed. And a different oscillator, if it is going to be a 66 MHz machine, rather than 80 MHz.
:D :D :D https://www.ebay.co.uk/itm/162502659921 suitable ?


David
Derek_Stewart
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Re: HELP again- GOLD CARD

Post by Derek_Stewart »

Silvester wrote:
Derek_Stewart wrote:There was however failures due user intervention, after removal of the CPU heatsink to look at the CPU serial number. This was detailed in QL Today, who never contacted me to establish if this was correct.
What sort of heatsink did you use on Q60?

BTW did anyone ever try using 68060/ 68040 adaptor on Q40? (https://amiga.technology/2021/01/18/680 ... formation/)
Hi,

I have some PCBs for the 68040 to 68060 which I was going use them on a QXL 2, which uses a 50Mhz Oscillator. The 68040 reduces the clock speed by 2, fitting a 68060 removes the half speed reduction of the 68040. I hoped to use a 68060RC50A so that it would run at full speed of 50 Mhz. I did not complete this, as the Q68 got in the way.

Maybe this msy not work as there mighg be problrms with SMSQ/E. When I have time, I complete the build and fit a 68060 to my 4 QXL Boards.
Silvester wrote:
Peter wrote:
Silvester wrote:BTW did anyone ever try using 68060/ 68040 adaptor on Q40? (https://amiga.technology/2021/01/18/680 ... formation/)
The Q40 mainboard is already prepared for 68060. It just requires the extra CPU pin headers and a 3.3V voltage regulator to be placed. And a different oscillator, if it is going to be a 66 MHz machine, rather than 80 MHz.
:D :D :D https://www.ebay.co.uk/itm/162502659921 suitable ?
That 68060 is an EC version, which does not gave a FPU or MMU, the Q60 use the RC 68060 with FPU and MMU.

Indcidently, the QXL used a EC 68040, no FPU or MMU, but fitting a RC 68040 the QXL runs okay, with FPU and MMU available, but SMSQ/E does not need this.


Regards,

Derek
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Re: HELP again- GOLD CARD

Post by Derek_Stewart »

mhanias wrote:Greeting.
While my ql +Gold Card working doing heavy math calculations the operation failed.
I have attached screen fotos.
I remove the gold card and ql works fine.
I have removed and cleared two removable chips from Gold card, but after a while the system crashed again.
Any help?
Is it possible the gold card be repaird and by whom!!!
Have you removed the 68008 CPU in the QL, as this could a power issue.


Regards,

Derek
Silvester
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Re: HELP again- GOLD CARD

Post by Silvester »

Silvester wrote:
Peter wrote:
Silvester wrote:BTW did anyone ever try using 68060/ 68040 adaptor on Q40? (https://amiga.technology/2021/01/18/680 ... formation/)
The Q40 mainboard is already prepared for 68060. It just requires the extra CPU pin headers and a 3.3V voltage regulator to be placed. And a different oscillator, if it is going to be a 66 MHz machine, rather than 80 MHz.
:D :D :D https://www.ebay.co.uk/itm/162502659921 suitable ?
:( :( :( Ebay seller informs me they have no 75MHz left, only 66MHz (both used parts).

New 50MHz parts from https://www.ebay.co.uk/itm/222178278865

BTW what is difference between original Motorola part and Coldfire ?


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tofro
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Re: HELP again- GOLD CARD

Post by tofro »

Silvester wrote:
Silvester wrote:
Peter wrote: BTW what is difference between original Motorola part and Coldfire ?
You want to use the plural here. There are a lot of differences.

First of all, there is no single Coldfire. It's a whole family of CPUs/MCUs all a tiny bit different and loosely "inspired by 68k", so, similar, but in no way "drop-in replacements". The closest to the 68k family is the CF V4e architecture which uses a more or less identical instruction set, but with a whole lot of differences in addressing modes. One of the main differences is they dropped quite a bunch of addressing modes with byte and word offsets and indices and only kept the longword versions. Even on this closest-to-68k version, old 68k software won't run without (very) major changes.

Motorola offered a software emulation layer through MicroAPL (that trapped out on unknown CF instructions and emulated them in software) which offered a fairly complete (with exceptions) 68k emulation, but that obviously comes with severe speed penalties and still won't run everything.


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Silvester
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Re: HELP again- GOLD CARD

Post by Silvester »

Ah, that's what I thought from other searches for info, thanks. Just thrown by listing (https://www.ebay.co.uk/itm/222178278865) description for new 68EC060RC50 as Coldfire,


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Peter
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Re: HELP again- GOLD CARD

Post by Peter »

Silvester wrote:
Peter wrote:
Silvester wrote:BTW did anyone ever try using 68060/ 68040 adaptor on Q40? (https://amiga.technology/2021/01/18/680 ... formation/)
The Q40 mainboard is already prepared for 68060. It just requires the extra CPU pin headers and a 3.3V voltage regulator to be placed. And a different oscillator, if it is going to be a 66 MHz machine, rather than 80 MHz.
:D :D :D https://www.ebay.co.uk/itm/162502659921 suitable ?
By definition, at least an MMU is required, which rules out the EC version of the 68060.
However, only Linux strongly depends on the MMU. SMSQ/E could be changed to work without MMU. And maybe it already does - I didn't use Q40/Q60 SMSQ/E for many years (until recently) and lost track.

The biggest issue is still that the Q40/Q60 require a true multisync monitor, and practically no modern flatscreen monitor provides that.
For flatscreen, there is just the choice between leaving one third of the screen black (with a replacement PLD) or the expensive OSCC converter.


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Peter
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Re: HELP again- GOLD CARD

Post by Peter »

Derek_Stewart wrote:I hoped to use a 68060RC50A so that it would run at full speed of 50 Mhz. I did not complete this, as the Q68 got in the way.
Don't forget there never was PLD support for 50 MHz. If you use a 50 MHz oscillator with a PLD designed for higher speed, you will get inefficient DRAM timings and a wrong frame interrupt frequency. Only 60/66/80 MHz are supported.
But the 68060RC50A runs fine at 60 MHz on that mainboard.


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