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Benchmarks 71B versus 48GX
05-04-2014, 10:56 PM
Post: #6
RE: Benchmarks 71B versus 48GX
(05-03-2014 01:57 AM)Mark Hardman Wrote:  HP-28C
1LK7 Saturn CPU (1 MHz)

Sorry, this is wrong. The HP-28C use the same LC frequency generator like in the HP-71B, so the CPU strobe frequency is 600-650 KHz. You can peek the 5 nibble =CSPEED content (#4F00Fh) on a HP-28C with an external peek program. The 5 nibble content is the CPU strobe frequency divided by 16. So a content of #09C05h mean: #09C05h -> #39941d * 16 = #639056d -> ~640 KHz.

(05-03-2014 01:57 AM)Mark Hardman Wrote:  HP-48GX
Yorke (00048-80063, 160 pin QFP), 4 MHz

This is also a mistake. Only very early HP48G Series calculators had a strobe frequency of 4 MHz. The frequency was then reduced to a nominal speed of ~3.68 MHz.
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Messages In This Thread
RE: Benchmarks 71B versus 48GX - Christoph Giesselink - 05-04-2014 10:56 PM
RE: Benchmarks 71B versus 48GX - RMollov - 06-22-2020, 04:48 AM
RE: Benchmarks 71B versus 48GX - KimH - 06-17-2020, 11:43 AM
RE: Benchmarks 71B versus 48GX - KimH - 06-17-2020, 12:25 PM
RE: Benchmarks 71B versus 48GX - KimH - 06-17-2020, 02:12 PM
RE: Benchmarks 71B versus 48GX - KimH - 06-18-2020, 06:09 AM
RE: Benchmarks 71B versus 48GX - KimH - 06-18-2020, 07:08 AM
RE: Benchmarks 71B versus 48GX - HP67 - 05-05-2014, 01:42 PM
RE: Benchmarks 71B versus 48GX - rprosperi - 06-17-2020, 10:23 PM
RE: Benchmarks 71B versus 48GX - KimH - 06-19-2020, 04:40 PM



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