Big Code File source

 APPLE II ELITE BIG CODE FILE SOURCE

 Apple II Elite was written by Ian Bell and David Braben and is copyright
 D. Braben and I. Bell 1986

 The code in this file is identical to the source disks released on Ian Bell's
 personal website at http://www.elitehomepage.org/ (it's just been reformatted
 to be more readable)

 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 contains code to produce the Big Code File for Apple II
 Elite. The Big Code File comprises the game code and the ship blueprints.


 This source file produces the following binary files:

   * CODE.unprot.bin
   * CODE1.unprot.bin
   * CODE2.unprot.bin

 after reading in the following files:

   * ELTA.bin
   * ELTB.bin
   * ELTC.bin
   * ELTD.bin
   * ELTE.bin
   * ELTF.bin
   * ELTG.bin
   * ELTH.bin
   * ELTI.bin
   * ELTJ.bin
   * ELTK.bin
   * SHIPS.bin


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

 _IB_DISK                   = (_VARIANT = 1)
 _SOURCE_DISK_BUILD         = (_VARIANT = 2)
 _SOURCE_DISK_CODE_FILES    = (_VARIANT = 3)
 _SOURCE_DISK_ELT_FILES     = (_VARIANT = 4)
 _4AM_CRACK                 = (_VARIANT = 5)
 _SOURCE_DISK               = (_VARIANT = 2) OR (_VARIANT = 3) OR (_VARIANT = 4)

 Configuration variables


 CODE% = $4000          ; The address where the main game code file is run

 LOAD% = $4000          ; The load address of the main game code file, which is
                        ; the same as the load address as it doesn't get moved
                        ; after loading

 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"

.eliteh

 PRINT "eliteh = ", ~P%
 INCBIN "3-assembled-output/ELTH.bin"

.elitei

 PRINT "elitei = ", ~P%
 INCBIN "3-assembled-output/ELTI.bin"

.elitej

 PRINT "elitej = ", ~P%
 INCBIN "3-assembled-output/ELTJ.bin"

.elitek

 PRINT "elitek = ", ~P%
 INCBIN "3-assembled-output/ELTK.bin"

 F% = P%

 PRINT "F% = ", ~F%
 PRINT "P% = ", ~P%

IF _SOURCE_DISK_BUILD

 EQUB $79, $68, $00, $00, $EA, $82, $74, $31    ; These bytes appear to be
 EQUB $00, $8F, $79, $6E, $00, $00, $05, $8A    ; unused and just contain random
 EQUB $74, $33, $00, $8F, $79, $7C, $00, $00    ; workspace noise left over from
 EQUB $FE, $83, $4C, $4F, $4F, $50, $00, $8F    ; the BBC Micro assembly process
 EQUB $79, $A6, $00, $00

ELIF _IB_DISK OR _4AM_CRACK OR _SOURCE_DISK_CODE_FILES OR _SOURCE_DISK_ELT_FILES

 SKIPTO $A300

ENDIF

.ships

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

 SKIPTO $C000


 Save CODE.unprot.bin


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

 Save CODE1.unprot.bin


 SAVE "3-assembled-output/CODE1.unprot.bin", CODE%, CODE% + $5000, LOAD%

 Save CODE2.unprot.bin


 SAVE "3-assembled-output/CODE2.unprot.bin", CODE% + $5000, P%, LOAD%