Thank you for your many helpful replies to my question.
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When I applied Rob Prins' method, surprisingly, it shortened the time to enter the ISPF screen by about 20 to 25 seconds.
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It became quite useful. Thank you very much.
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I am also considering the method that Ren¨¦ Ferland suggested earlier and building the latest hercules 4.9.
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However, considering the slow IO speed of the Raspberry Pi's SD CARD, I don't think there will be a big change, but I will try to optimize it if I can.
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Thank you all.
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I started using computers with DOS, but I learned about hercules while watching YouTube videos about computer work in the mainframe era,
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and I felt new inspiration while using MVS directly.
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I feel like I am learning computers anew.
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I am more attracted to single-tasking than multitasking.
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Thank you all.
