6502/n65
1
0
Fork 0
mirror of https://github.com/safiire/n65.git synced 2025-08-08 12:25:24 +00:00
Code Issues Projects Releases Wiki Activity

this branch sucks

Browse Source
This commit is contained in:
Safiire
2015-02-22 06:33:36 -08:00
parent 404934479f
commit a52ead091e
1 changed files with 18 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
lib/assembler.rb
View File

@@ -158,7 +158,7 @@ module Assembler6502
## I am guessing the ROM size should be 1 bank of 16KB cartridge ROM ## I am guessing the ROM size should be 1 bank of 16KB cartridge ROM
## plus the 16 byte iNES header. If the ROM is written into memory ## plus the 16 byte iNES header. If the ROM is written into memory
## beginning at 0xC000, this should reach right up to the interrupt vectors ## beginning at 0xC000, this should reach right up to the interrupt vectors
def assemble_old def assemble
virtual_memory = assemble_in_virtual_memory 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
@@ -197,7 +197,8 @@ module Assembler6502
#### ####
## Another try at using the header to decide which segments ## Another try at using the header to decide which segments
## go into the final ROM image, and which order. ## go into the final ROM image, and which order.
def assemble ## This does not work, it needs to know about banks.
def assemble_new_crap
virtual_memory = assemble_in_virtual_memory 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
@@ -222,25 +223,25 @@ module Assembler6502
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
if @ines_header.char >= 1 #if @ines_header.char >= 1
char_start = 0x10 + (@ines_header.prog * MemorySpace::ProgROMSize) #char_start = 0x10 + (@ines_header.prog * MemorySpace::ProgROMSize)
nes_rom.write(char_start, virtual_memory.read(0x0000, MemorySpace::CharROMSize)) #nes_rom.write(char_start, virtual_memory.read(0x0000, MemorySpace::CharROMSize))
puts "Wrote 8KB byte char rom 1" #puts "Wrote 8KB byte char rom 1"
end #end
## If char rom is == 2 write the 8kb chunk from 0x2000 ## If char rom is == 2 write the 8kb chunk from 0x2000
if @ines_header.char >= 1 #if @ines_header.char == 2
char_start = 0x10 + (@ines_header.prog * MemorySpace::ProgROMSize) + MemorySpace::CharROMSize #char_start = 0x10 + (@ines_header.prog * MemorySpace::ProgROMSize) + MemorySpace::CharROMSize
nes_rom.write(char_start, virtual_memory.read(0x2000, MemorySpace::CharROMSize)) #nes_rom.write(char_start, virtual_memory.read(0x2000, MemorySpace::CharROMSize))
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