Rescued LC 475 CPU Chip ID

2002-07-15 Thread Spiritus ex Machina

I recently rescured an LC475 box on its way to the recycler. Its 
provenance is unknown. It has 4M+16M memory, 512K VRAM, and the standard 
manual-inject HD floppy and 160M hard drive. What I'm not sure about is 
the CPU. Stock LC475s are supposed to have a 25MHz 68LC040 CPU (no FPU). 
The chip in this box is labeled XC68040RC25M. MacCheck says that it 
has a 68040 processor at 25MHz with a built-in 040 co-processor. So, my 
question is whether this a 68LC040 in a clever disguise or a real 68040.

Any advice?

-- 
   Spiritus ex Machina
   No matter how paranoid you are, it isn't paranoid enough.



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Re: Rescued LC 475 CPU Chip ID

2002-07-15 Thread Dana Sibera


On Tuesday, July 16, 2002, at 07:18  AM, Spiritus ex Machina wrote:

 I recently rescured an LC475 box on its way to the recycler. Its
 provenance is unknown. It has 4M+16M memory, 512K VRAM, and the standard
 manual-inject HD floppy and 160M hard drive. What I'm not sure about is
 the CPU. Stock LC475s are supposed to have a 25MHz 68LC040 CPU (no FPU).
 The chip in this box is labeled XC68040RC25M. MacCheck says that it
 has a 68040 processor at 25MHz with a built-in 040 co-processor. So, my
 question is whether this a 68LC040 in a clever disguise or a real 68040.

That sounds like you're just plain lucky :). All LC040-FPUless 040's 
I've seen have had 68LC040 stamped on the chip - and you have a nice 
happy FPU there I'd say!

The one sure test is to download a benchmark prog such as speedometer - 
if it records your math speed as dozens of times faster than a Quadra 
605 (the same as an LC475) then the FPU is there and working.

dana
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Re: Rescued LC 475 CPU Chip ID

2002-07-15 Thread Dana Sibera


On Tuesday, July 16, 2002, at 07:46  AM, Dana Sibera wrote:
 The one sure test is to download a benchmark prog such as speedometer -

Just for completeness, a version of speedometer can be got from:

http://mes.emuunlim.com/software/applications/disk_tools.htm

be well :)
dana
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Re: Rescued LC 475 CPU Chip ID

2002-07-15 Thread Spiritus ex Machina

Thanks for the information about 040s and the speedometer link. I'll be 
checking it out as soon as I can get the system on the net.

Sp00ky

Dana Sibera wrote:
 On Tuesday, July 16, 2002, at 07:46  AM, Dana Sibera wrote:
 
The one sure test is to download a benchmark prog such as speedometer -
 
 Just for completeness, a version of speedometer can be got from:
 
 http://mes.emuunlim.com/software/applications/disk_tools.htm
 
 be well :)
 dana
 --
 unnaturally hosted on a Q605,
 http://www.danamania.com/

-- 
   Spiritus ex Machina
   No matter how paranoid you are, it isn't paranoid enough.


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