GBA emu with debugger features usefull for dev types, heres whats new:

multicart:

• remove_machine: also unloads associated ROM, unless memory shared
  
• load into machine; if none such: allocate new machine(s)
  
• cartloader target selectable (specific machine, or all machines)
  
  help:
  
• added various NDS chapters, 2D video, memory map & control, arm9 I/O map
  
• described NDS cartridge header & protocol with some new details
  
• cleaned up coprocessor operand names (Pn,Cn instead P#,CRn,etc.)
  
• corrected sprites/scanline formula (10+n*2 per n pix, not 26 per 8 pix)
  
  cpu:
  
• handles CP15 system control coprocessor opcodes and Cn,Cm,N registers
  
  debug:
  
• disassembler supports all copro opcodes, assembler all except ldc/stc
  
  shareware:
  
• changed decrypter extension (microsoft declared .prg as virus)