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Some updates but assemblying programs with multiple banks, or more prog and char sections is messed up

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Safiire 2015-02-22 17:39:35 -08:00
parent a52ead091e
commit d10709e0b0
1 changed files with 27 additions and 29 deletions
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56
lib/assembler.rb
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@ -195,38 +195,36 @@ module Assembler6502
#### ####
## Another try at using the header to decide which segments ## This is all crap, I must research how banks and mappers work
## go into the final ROM image, and which order. #def assemble_new_crap
## This does not work, it needs to know about banks. # virtual_memory = assemble_in_virtual_memory
def assemble_new_crap
virtual_memory = assemble_in_virtual_memory
## First we need to be sure we have an iNES header # ## First we need to be sure we have an iNES header
fail(INESHeaderNotFound) if @ines_header.nil? # fail(INESHeaderNotFound) if @ines_header.nil?
## Now, we should decide how big the ROM image will be. # ## Now, we should decide how big the ROM image will be.
## And reserve memory build the image in # ## And reserve memory build the image in
nes_rom_size = MemorySpace::INESHeaderSize # nes_rom_size = MemorySpace::INESHeaderSize
nes_rom_size += @ines_header.prog * MemorySpace::ProgROMSize # nes_rom_size += @ines_header.prog * MemorySpace::ProgROMSize
nes_rom_size += @ines_header.char * MemorySpace::CharROMSize # nes_rom_size += @ines_header.char * MemorySpace::CharROMSize
nes_rom = MemorySpace.new(nes_rom_size) # nes_rom = MemorySpace.new(nes_rom_size)
puts "ROM will be #{nes_rom_size} bytes" # puts "ROM will be #{nes_rom_size} bytes"
## Write the ines header to the ROM # ## Write the ines header to the ROM
nes_rom.write(0x0, @ines_header.emit_bytes) # nes_rom.write(0x0, @ines_header.emit_bytes)
puts "Wrote 16 byte ines header" # puts "Wrote 16 byte ines header"
## If prog rom is >= 1 write the 16kb chunk from 0x8000 # ## If prog rom is >= 1 write the 16kb chunk from 0x8000
if @ines_header.prog >= 1 # if @ines_header.prog >= 1
nes_rom.write(0x10, virtual_memory.read(0x8000, MemorySpace::ProgROMSize)) # nes_rom.write(0x10, virtual_memory.read(0x8000, MemorySpace::ProgROMSize))
puts "Wrote 16KB byte prog rom 1" # puts "Wrote 16KB byte prog rom 1"
end # end
## If prog rom is == 2 write the 16kb chunk from 0xC000 # ## If prog rom is == 2 write the 16kb chunk from 0xC000
#if @ines_header.prog == 2 # #if @ines_header.prog == 2
#nes_rom.write(0x10 + 0x4000, virtual_memory.read(0xC000, MemorySpace::ProgROMSize)) # #nes_rom.write(0x10 + 0x4000, virtual_memory.read(0xC000, MemorySpace::ProgROMSize))
#puts "Wrote 16KB byte prog rom 2" # #puts "Wrote 16KB byte prog rom 2"
#end # #end
#fail("Can only have 2 prog rom slots") if @ines_header.prog > 2 #fail("Can only have 2 prog rom slots") if @ines_header.prog > 2
## If char rom is >= 1 write the 8kb chunk from 0x0000 ## If char rom is >= 1 write the 8kb chunk from 0x0000
@ -243,8 +241,8 @@ module Assembler6502
#puts "Wrote 8KB byte char rom 2" #puts "Wrote 8KB byte char rom 2"
#end #end
nes_rom.emit_bytes #nes_rom.emit_bytes
end #end
end end