Difference between revisions of "83Plus:BCALLs:8054"
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Note that the high bits of A are masked out appropriately (so, for instance, passing A = 7F will read from the boot page regardless of the hardware version.) Set A = 0 to copy data from the main RAM; you cannot use this routine to copy data from the extra RAM. | Note that the high bits of A are masked out appropriately (so, for instance, passing A = 7F will read from the boot page regardless of the hardware version.) Set A = 0 to copy data from the main RAM; you cannot use this routine to copy data from the extra RAM. | ||
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| + | In experimenting with this BCall, I have discovered that the register A is often disrupted after this call returns | ||
| + | ---Nyquist562--- | ||
Revision as of 17:52, 9 May 2007
Synopsis
Unofficial Name: FlashToRAM2
BCALL Address: 8054
Copy data to RAM from either Flash or RAM.
Inputs
- AHL = source address
- DE = destination address
- BC = number of bytes to copy
Outputs
- AHL advanced by BC bytes
- DE advanced by BC bytes
- BC = 0
Destroys
Comments
This is almost exactly equivalent to the OS FlashToRAM.
Note that the high bits of A are masked out appropriately (so, for instance, passing A = 7F will read from the boot page regardless of the hardware version.) Set A = 0 to copy data from the main RAM; you cannot use this routine to copy data from the extra RAM.
In experimenting with this BCall, I have discovered that the register A is often disrupted after this call returns ---Nyquist562---
