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ROM speed suitable for H5?

Information and progress towards the H5 board.
Steve
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Joined: 15 Sep 2017 11:49

ROM speed suitable for H5?

Post by Steve »

I am just wondering, since EmuTOS keeps getting updated (and I like to keep up to date if possible) Do I need to keep writing one-time-programmable 27c4096 chips (55ns) or will the H5 be happy with 120ns 27c4096acc-12 UV erasable roms?

ps - as a side question, is there any such thing as an e-eprom variant that doesn't need UV erasing?
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exxos
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Re: ROM speed suitable for H5?

Post by exxos »

The H5 will work fine with any chips. You do need 100ns if using the 16MHz booster. 55ns is for the STE when running 32MHz.

Things will be easier if I ever get flashy clock finished :roll:
Steve
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Re: ROM speed suitable for H5?

Post by Steve »

exxos wrote: 19 May 2023 16:22 The H5 will work fine with any chips. You do need 100ns if using the 16MHz booster. 55ns is for the STE when running 32MHz.

Things will be easier if I ever get flashy clock finished :roll:
I'm using the TOS Decoder (your little one which can also be a 16mhz booster) & TF536 50mhz 030 - will that be ok for 120ns?
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exxos
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Re: ROM speed suitable for H5?

Post by exxos »

Steve wrote: 19 May 2023 17:07 I'm using the TOS Decoder (your little one which can also be a 16mhz booster) & TF536 50mhz 030 - will that be ok for 120ns?
Should be.

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