PC-1421 in PockEmul

The Sharp PC-1421, a financial pocket computer, is now emulated by PockEmul.

It was so easy to integrate it, because it is exactly the same pocket than the PC-1401 with a different ROM and a different crystal (768Khz instead of 568Khz). So, just after dump the new ROM, i created a new object derivated from the PC-1401 et voilà.

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2 thoughts on “PC-1421 in PockEmul”

Sancho says:

31 December 2023 at 19 h 35 min

What is the memory map of the VRAM of the PC-1421 model?

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1. pockemul says:
  
  1 January 2024 at 13 h 51 min
  
  0x0000 – 0x1FFF : CPU ROM (8KB)
  0x2000 – 0x37FF : 4 x RAM IMAGE of 3800-3FFF
  0x3800 – 0x47FF : RAM (4KB)
  0x4000 – 0x57FF : RAM IOMAGE of 4000-47FF
  0x6000 – 0x67FF: LCD memory
  0x8000 – 0xffff: BASIC ROM (32KB)
  
  Reply

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You certainly remember the programmable pocket computers and calculators that appeared in the late ’70s and had their golden age in the following decade.

Many computer scientists today have made their first steps with them. Those who have turned to other passions, keep the memory of having lived the genesis of a science that has today invaded our lives.

If you have not kept your vintage machine, or dream of typing on models that were inaccessible to you, PockEmul can satisfy your nostalgia by reliving these wonderful technological objects back inside your smartphone or tablet.