107 lines
3.5 KiB
PowerShell
107 lines
3.5 KiB
PowerShell
# Assembles and links the source assemblies into a .nes ROM.
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# Run this script from powershell if available, if not available use build.bat
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# batch file from the windows command prompt.
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$global:SOURCE_CONTRA = $null
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$US_CONTRA_HASH = "1C747C78C678F14A68D4E5FCAE065298A103F833638775860F0E5C5FFAA061F62D45FD8942148B1507C1FD57FDE950A5D83F9F84A9782EC048A56067740C48E9"
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<#
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.SYNOPSIS
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Copies bytes from the Contra US NES rom file into binary files for use when
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assembling.
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#>
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function Set-Bytes {
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param ($Skip, $Take, $Output)
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IF (Test-Path -Path $Output) {
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return
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}
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# only read baserom.nes once for speed improvements
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IF ($global:SOURCE_CONTRA -eq $null) {
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Write-Output " Reading input file baserom.nes."
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IF ($PSVersionTable.PSVersion.Major -ge 6) {
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$global:SOURCE_CONTRA = Get-Content .\baserom.nes -AsByteStream
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} ELSE {
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$global:SOURCE_CONTRA = Get-Content .\baserom.nes -Raw -Encoding Byte
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}
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}
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Write-Output " Writing file $Output."
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IF ($PSVersionTable.PSVersion.Major -ge 6) {
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$global:SOURCE_CONTRA | Select-Object -Skip $Skip -First $Take | Set-Content $Output -AsByteStream
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} ELSE {
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$global:SOURCE_CONTRA | Select-Object -Skip $Skip -First $Take | Set-Content $Output -Encoding Byte
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}
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}
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IF (Test-Path -Path "contra.nes") {
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Write-Output "Deleting contra.nes."
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Remove-Item -Path "contra.nes"
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}
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IF (-not (Test-Path -Path "obj")) {
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New-Item -ItemType Directory -Path obj
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}
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IF (Test-Path -Path obj\*.o) {
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Write-Output "Deleting object files."
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Remove-Item -Path obj\*.o
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}
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IF (-not (Test-Path -Path "baserom.nes")) {
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Write-Output "No baserom.nes file found. If assets are missing, then the build will fail."
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} ELSE {
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$SHA512_HASH = (Get-FileHash baserom.nes -Algorithm SHA512).Hash
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IF ($SHA512_HASH -ne $US_CONTRA_HASH) {
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Write-Warning "baserom.nes file integrity does NOT match expected result."
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}
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}
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# loop through assets defined in assets.txt and extract bytes from baserom.nes
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Write-Output "Extracting binary data from baserom.nes"
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ForEach ($line in Get-Content -Path assets.txt) {
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$tokens = -split $line
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Set-Bytes -Skip $tokens[1] -Take $tokens[2] -Output $tokens[0]
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}
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# prevent write race condition
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Start-Sleep -Milliseconds 100
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Write-Output "Assembling PRG Rom Banks"
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# show commands run in output
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Set-PSDebug -Trace 1
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ca65 -g --debug-info -o obj\constants.o src\constants.asm
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ca65 -g --debug-info -o obj\ines_header.o src\ines_header.asm
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ca65 -g --debug-info -o obj\bank0.o src\bank0.asm
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ca65 -g --debug-info -o obj\bank1.o src\bank1.asm
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ca65 -g --debug-info -o obj\bank2.o src\bank2.asm
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ca65 -g --debug-info -o obj\bank3.o src\bank3.asm
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ca65 -g --debug-info -o obj\bank4.o src\bank4.asm
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ca65 -g --debug-info -o obj\bank5.o src\bank5.asm
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ca65 -g --debug-info -o obj\bank6.o src\bank6.asm
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ca65 -g --debug-info -o obj\bank7.o src\bank7.asm
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Set-PSDebug -Trace 0
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# link assemblies together to single .nes ROM
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Write-Output "Creating .nes ROM"
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Set-PSDebug -Trace 1
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ld65 -C contra.cfg --dbgfile contra.dbg .\obj\constants.o .\obj\ines_header.o .\obj\bank0.o .\obj\bank1.o .\obj\bank2.o .\obj\bank3.o .\obj\bank4.o .\obj\bank5.o .\obj\bank6.o .\obj\bank7.o -o contra.nes
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# compare assembled ROM hash to expected hash if file exists
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Set-PSDebug -Trace 0
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IF (Test-Path -Path "contra.nes") {
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$SHA512_HASH = (Get-FileHash contra.nes -Algorithm SHA512).Hash
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IF ($SHA512_HASH -eq $US_CONTRA_HASH) {
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Write-Output "File integrity matches."
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} ELSE {
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Write-Warning "File integrity does NOT match."
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}
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}
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