Big Code File source

 ELECTRON ELITE BIG CODE FILE SOURCE

 Electron Elite was written by Ian Bell and David Braben and is copyright
 Acornsoft 1984

 The code on this site has been reconstructed from a disassembly of the version
 released on Ian Bell's personal website at http://www.elitehomepage.org/

 The commentary is copyright Mark Moxon, and any misunderstandings or mistakes
 in the documentation are entirely my fault

 The terminology and notations used in this commentary are explained at
 https://elite.bbcelite.com/terminology

 The deep dive articles referred to in this commentary can be found at
 https://elite.bbcelite.com/deep_dives


 This source file produces the following binary files:

   * ELITECO.bin

 after reading in the following files:

   * ELTA.bin
   * ELTB.bin
   * ELTC.bin
   * ELTD.bin
   * ELTE.bin
   * ELTF.bin
   * ELTG.bin
   * SHIPS.bin
   * WORDS9.bin


 INCLUDE "1-source-files/main-sources/elite-build-options.asm"

 _IB_SUPERIOR           = (_VARIANT = 1)
 _IB_ACORNSOFT          = (_VARIANT = 2)

 GUARD &5800            \ Guard against assembling over screen memory

 Configuration variables


 CODE% = &0D00          \ CODE% is set to the location that the main game code
                        \ gets moved to after it is loaded

IF _DISC

 LOAD% = &2000          \ The load address of the main game code file

ELSE

 LOAD% = &0E00          \ The load address of the main game code file

ENDIF

 Load the compiled binaries to create the Big Code File


 ORG CODE%

.elitea

 PRINT "elitea = ", ~P%
 INCBIN "3-assembled-output/ELTA.bin"

.eliteb

 PRINT "eliteb = ", ~P%
 INCBIN "3-assembled-output/ELTB.bin"

.elitec

 PRINT "elitec = ", ~P%
 INCBIN "3-assembled-output/ELTC.bin"

.elited

 PRINT "elited = ", ~P%
 INCBIN "3-assembled-output/ELTD.bin"

.elitee

 PRINT "elitee = ", ~P%
 INCBIN "3-assembled-output/ELTE.bin"

.elitef

 PRINT "elitef = ", ~P%
 INCBIN "3-assembled-output/ELTF.bin"

.eliteg

 PRINT "eliteg = ", ~P%
 INCBIN "3-assembled-output/ELTG.bin"

.checksum0

 PRINT "checksum0 = ", ~P%

 SKIP 1                 \ We skip this byte so we can insert the checksum later
                        \ in elite-checksum.py

IF _IB_ACORNSOFT

 SKIP 1                 \ This byte appears to be unused

ENDIF

.ships

 PRINT "ships = ", ~P%
 INCBIN "3-assembled-output/SHIPS.bin"

.end

 Save ELITECO.unprot.bin


 PRINT "P% = ", ~P%
 PRINT "S.ELITECO ", ~CODE%, " ", ~P%, " ", ~LOAD%, " ", ~LOAD%
 SAVE "3-assembled-output/ELITECO.unprot.bin", CODE%, P%, LOAD%