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Add a block transfer function from MOS to VDP #30

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breakintoprogram opened this issue Mar 14, 2023 · 2 comments
Closed

Add a block transfer function from MOS to VDP #30

breakintoprogram opened this issue Mar 14, 2023 · 2 comments
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enhancement New feature or request

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@breakintoprogram
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breakintoprogram commented Mar 14, 2023 •
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As a SureCloud developer
I want to be able to pass a block of data to the VDP
Without the overhead of doing lots of RST 10h calls in a loop
As I am concerned about performance
@breakintoprogram breakintoprogram added the enhancement New feature or request label Mar 14, 2023
@breakintoprogram
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breakintoprogram commented Mar 14, 2023 •
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Add as new RST instruction (18h) or a mos command?

  • HLU: Pointer to block in memory (auto-translate if in 16-bit mode)
  • BC: Number of bytes to transfer

If BC is 0, then

  • A: terminator character (i.e. 0, CR, etc)

@breakintoprogram
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Implemented as RST 18h in the MOS

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enhancement New feature or request
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AGON Quark Firmware
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