Add stage 1 editor and update README

1 files changed, 14 insertions, 8 deletions

diff --git a/README.md b/README.md
index 960bc58..bb78be6 100644
--- a/README.md
+++ b/README.md
@@ -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