LPC2138

OK, LPC2138 is an ARM7TDMI, 512kB flash, 32kB ram from NXP/Philips.

I'm doing it from zero, since I plan to write some super cool OS for it.

Memory mapping

memory mapping

0x0	flash
0x4000 0000	sram
0x7fff d000	boot block
0xe000 0000	vpb peripherals
0xffe0 0000	ahb peripherals

arm exception vector locations

ok, so these fuckers can be remapped:

* boot loader mode (on start up), boot block vectors are mapped here
* user flash mode (from boot code), activated by BL, needs valid program sig and non-forced BL. non re-mapped vectors (== stays in flash, bottom)
* user ram mode (from program), user program can remap vectors to bottom of SRAM

arm vectors

0x0	Reset
0x4	Undefined Instruction
0x8	Software Interrupt
0xc	Prefetch Abort
0x10	Data Abort
0x14	Reserved!!!
0x18	IRQ
0x1c	FIQ