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R. Belmont
Cuckoo for IGAvania
Reged: 09/21/03
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Re: Speeding up CPS3 flash upgrade
11/04/13 06:44 PM


> By the way, acording to the datasheet:
> "Byte Programming (7us typical)" which means about 7 secs per Megabyte and 112 secs
> for the longest game that has 16Mbytes.
>
> 2-3 minutes is very acceptable time for rewriting a game into the simm, comnpared to
> the 45 minutes that takes now, which is certainly too long.

The actual byte programming isn't the majority of the time taken; the "erase sector" command is. (This remains true even on modern SSDs and USB sticks and the like). On typical flash of that vintage, it can take a full second or more to erase a block, and you must erase each block prior to programming it. The System 573 games' setup process got an order of magnitude slower when smf put in proper erase timings, and I don't imagine it did CPS-3 any favors either.







Entire thread
Subject Posted by Posted on
* Speeding up CPS3 flash upgrade Darksoft 10/11/13 02:30 PM
. * Re: Speeding up CPS3 flash upgrade Naoki  10/11/13 05:13 PM
. * Re: Speeding up CPS3 flash upgrade Darksoft  10/12/13 02:01 PM
. * Re: Speeding up CPS3 flash upgrade Matty_  10/16/13 05:59 AM
. * Re: Speeding up CPS3 flash upgrade Darksoft  10/16/13 09:36 PM
. * Re: Speeding up CPS3 flash upgrade Matty_  10/17/13 12:30 AM
. * Re: Speeding up CPS3 flash upgrade Darksoft  10/17/13 01:31 PM
. * Re: Speeding up CPS3 flash upgrade R. Belmont  10/17/13 06:02 PM
. * Re: Speeding up CPS3 flash upgrade Darksoft  10/17/13 10:44 PM
. * Re: Speeding up CPS3 flash upgrade Matty_  10/18/13 05:15 AM
. * Re: Speeding up CPS3 flash upgrade R. Belmont  10/25/13 05:38 PM
. * Re: Speeding up CPS3 flash upgrade Darksoft  11/01/13 10:06 PM
. * Re: Speeding up CPS3 flash upgrade R. Belmont  11/04/13 06:44 PM
. * Re: Speeding up CPS3 flash upgrade Darksoft  11/27/13 02:42 PM
. * Re: Speeding up CPS3 flash upgrade Darksoft  11/01/13 01:56 PM

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