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added massive comment in memory.h about how memory is laid out to work with the bootloader. more code cleanup

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Boris Honman
2019-08-14 15:30:41 -04:00
parent 797f180a5c
commit 0d425faf6f
5 changed files with 99 additions and 25 deletions
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4
bootloader/src/VectorRemap.asm
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@@ -20,14 +20,14 @@
;//High priority interrupt vector remapping
PSECT HiVector,class=CODE,delta=1,abs
org 0x08
goto 0x2008 ;Resides at 0x0008 (hardware high priority interrupt vector), and causes PC to jump to 0x2008 upon a high priority interrupt event
goto 0x1408 ;Resides at 0x0008 (hardware high priority interrupt vector), and causes PC to jump to application's interrupt vector upon a high priority interrupt event
;//Low priority interrupt vector remapping, as well as bootloader mode absolute
;//entry point (located at 0x001C).
PSECT LoVector,class=CODE,delta=1,abs
org 0x18
goto 0x2018 ;Resides at 0x0018 (hardware low priority interrupt vector), and causes PC to jump to 0x2018 upon a low priority interrupt event
goto 0x1418 ;Resides at 0x0018 (hardware low priority interrupt vector), and causes PC to jump to application's interrupt vector upon a low priority interrupt event
goto 0x30 ;Resides at 0x001C //Serves as absolute entry point from application program into the bootloader mode