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Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 22 |
1 files changed, 14 insertions, 8 deletions
@@ -2,24 +2,30 @@ I'm starting over. -## Hexedit +## Octedit -This is a bare-minimum hex editor -which fits entirely within the 252-byte boot sector +This is a bare-minimum memory editor +which fits entirely within the 256-byte boot sector of the Raspberry Pi Pico's on-board flash. - Most of the space is dedicated to setting up the clocks, GPIO, and UART. -Enter a series of octal halfwords +To use, enter a series of octal halfwords over UART then press G to jump to the beginning of SRAM and begin executing them as instructions. - This is the first step in bootstrapping the whole system. -## Better editor +## Hexedit + +A more robust and user-friendly memory editor, +which uses hexadecimal instead of octal, +validates input characters, +and displays the address and contents +of the halfword currently being edited. -A more robust and user-friendly hex editor. +The machine code for this editor +can be keyed in using octedit +as a series of 16-bit octal halfwords. ## Assembler |