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21 October 2008, 16:26
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#1 |
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Registered User
Join Date: Oct 2008
Location: Finland
Posts: 643
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Phase 5 Blizzard 1230 IV FPU?
Hi! Can I use a 33MHz PGA FPU with this accelerator? Thanks in advance!
P.S. Does someone happen to have the instruction manual to this accelerator? Thanks! |
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21 October 2008, 18:19
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#2 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 58
Posts: 3,482
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Yes.
Depending on the crystal (and CPU speed), it's a good idea placing a heatsink over it. I don't recommend the use of a 33MHz unit on a 50MHz board. Be warned. |
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14 December 2008, 02:08
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#3 |
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Not dead yet!!! :D
Join Date: Feb 2008
Location: Aveiro / Portugal
Age: 42
Posts: 690
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I have the instructions manual. Just not in electronic format.
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14 December 2008, 09:03
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#4 |
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70X7
Join Date: Apr 2008
Location: Ἑλλάς
Posts: 1,078
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i am using 33mh FPU on my Blizz IV /50 i year late with no problem
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14 December 2008, 23:00
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#5 | |
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Registered User
Join Date: Sep 2007
Location: Melbourne/Australia
Posts: 4,400
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Quote:
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14 December 2008, 23:05
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#6 |
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Not dead yet!!! :D
Join Date: Feb 2008
Location: Aveiro / Portugal
Age: 42
Posts: 690
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When you press "2", the FPU is also disabled?
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14 December 2008, 23:38
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#7 | |
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Global Moderator
Join Date: Aug 2008
Location: Sidcup, England
Posts: 10,300
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Quote:
You can download the instruction manual (English or German) from here as a PDF: http://amiga.resource.cx/exp/blizzard1230mk4 and some SCSI-Tools disks are available there too!
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15 December 2008, 01:21
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#8 | |
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70X7
Join Date: Apr 2008
Location: Ἑλλάς
Posts: 1,078
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Quote:
Tell if you want some programs nedeed FPU use |
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16 December 2008, 00:48
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#9 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 58
Posts: 3,482
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FPU is used only by ray-tracing programs and (believe!) lha. So to check if a FPU is working OK, just compress or decompress a file.
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16 December 2008, 01:47
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#10 | |
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70X7
Join Date: Apr 2008
Location: Ἑλλάς
Posts: 1,078
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Quote:
is ok? |
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16 December 2008, 11:14
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#11 |
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Got the C= spark again :)
Join Date: Oct 2008
Location: Finland
Posts: 69
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I find it very unlikely that an FPU would speed up LHA, or any other (de)compression for that matter. (De)compression is integer arithmetic, AFAIK
 Most (all?) ray-tracing programs should benefit from an FPU, though - rkauer is right about that! 
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16 December 2008, 11:19
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#12 |
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Registered User
Join Date: Dec 2007
Location: Oooh what a feeling yeaaah dancing on the ceiling
Posts: 314
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It's a common misconception that the FPU cannot do integer operations...
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16 December 2008, 20:02
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#13 |
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I hate potatos and shirts
Join Date: Oct 2007
Location: Sao Leopoldo / Brazil
Age: 58
Posts: 3,482
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@Andymiga: just use any version of lha to decompress a file on a CLI window and you will be surprised. Just read the header when the decompression starts: if you have a FPU on the Amiga, the app will use it.
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17 December 2008, 07:24
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#14 | |
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Got the C= spark again :)
Join Date: Oct 2008
Location: Finland
Posts: 69
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Quote:
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