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giuliofgiuliof
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added script to generate a clean CP/M disk with applications
- patch for cpmtools to be able to handle the Ceda disk format - updated diskdefs to be compliant with the cpmtools patch - updated gitignore with temporary directories
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‎.gitignore‎

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build
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build/
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disks/
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cpmtools/
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.vscode/
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*.bin
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*.com
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*.COM
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*.o
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*.lis
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*.def
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*.map
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*.sym
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*.bak

‎diskdefs‎

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# Image exported from HxCFloppyEmulator with 9216 bytes as boot area (1st track
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# head 0 and 1, with different format size).
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diskdef sanco
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# Disk properties
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seclen 1024
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# 79 tracks double sided (1st track excluded)
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tracks 158
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# 5 sectors per track
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sectrk 5
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# Blocksize from CPM-BIOS
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blocksize 4096
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# Maxdir from CPM-BIOS
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maxdir 128
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# Why skew 2? I don't know
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skew 2
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# No boot track
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boottrk 0
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# Skip boot area
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offset 9216
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os 2.2
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end
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# Image exported as before, but without boot area
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diskdef sanco-no-boot
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seclen 1024
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tracks 158
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sectrk 5
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blocksize 4096
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maxdir 128
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skew 2
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boottrk 0
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bootsec 0
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os 2.2
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end
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# Image exported as before, but with tweaked boot area: added +1024bytes as
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# padding to make first track like the others (256 * 16 + 1024 = 1024 * 5)
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diskdef sanco-uniformed
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seclen 1024
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tracks 160
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sectrk 5
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blocksize 4096
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maxdir 128
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skew 2
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boottrk 2
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boottrkgeometry 256,16
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os 2.2
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end

‎makedisk.sh‎

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#!/bin/bash
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# -----------------------------------------------------------------------------
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# SANCO CP/M 2.2 Disk Image Builder
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#
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# This script automates the process of:
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# - Preparing patched version of cpmtools for this platform
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# - Generating the boot track
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# - Patching SLF80037.COM (autoexec.bat) for a given locale
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# - Building final CP/M disk images with applications
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#
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# It creates three disk images by default: us, fr, it.
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# -----------------------------------------------------------------------------
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set -euo pipefail
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IFS=$'\n\t'
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# -----------------------------------------------------------------------------
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# Globals and constants
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# -----------------------------------------------------------------------------
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SCRIPT_DIR=$(dirname `realpath $0`) # Base directory where the script is run
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TMPFILES=() # Track temp files for cleanup
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CPMTOOLS_PREFIX="" # Set by prepare_cpmtools()
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# Applications to be copied into the CP/M disk
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# CORE = code that has been reversed and can be assembled from source
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CORE_APPS=(CONFIG80.COM COPY8003.COM FUNK00.COM PAR8003.COM SG8003.COM TRX62.COM)
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# EXTRA = all additional software that is not yet reversed (in this repo) or
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# we don't want to reverse
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EXTRA_APPS=(ASM.COM DDT.COM DUMP.COM LOAD.COM PIP.COM STAT.COM SUBMIT.COM XSUB.COM ED.COM MBASIC.COM RCX62.COM TERM80.COM FMT8003.COM)
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# -----------------------------------------------------------------------------
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# Helpers
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# -----------------------------------------------------------------------------
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# Clean up temporary files on exit
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cleanup() {
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if [[ ${#TMPFILES[@]} -gt 0 ]]; then
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rm -rf -- "${TMPFILES[@]}"
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fi
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}
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trap cleanup EXIT
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# Allocate a new temporary file or directory and track it for later cleanup
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# Return: sets TMP with the generated temporary path
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new_tmp() {
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TMP=$(mktemp "$@")
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TMPFILES+=("$TMP")
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}
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# Simple logger for progress messages
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log() {
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echo -e "==> $*" >&2
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}
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# Validate the locale to avoid invalid filenames or missing resources
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validate_locale() {
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case "$1" in
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us|fr|it) ;;
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*) echo "Invalid locale: $1" >&2; exit 1;;
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esac
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}
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# -----------------------------------------------------------------------------
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# Prepare cpmtools (clone, patch, build)
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# -----------------------------------------------------------------------------
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prepare_cpmtools() {
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if [[ ! -d cpmtools ]]; then
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log "Cloning cpmtools repository..."
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git clone https://github.com/lipro-cpm4l/cpmtools.git
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fi
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pushd cpmtools > /dev/null
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if [[ ! -f .patched ]]; then
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log "Applying local patch to cpmtools..."
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git reset --hard # ensure clean tree before patch
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git apply ../patch/0001-feat-added-capability-to-handle-images-with-multiple.patch
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touch .patched
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fi
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if [[ ! -f mkfs.cpm ]]; then
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log "Building cpmtools..."
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./configure
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make -j"$(nproc)" all
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touch .built
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fi
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popd > /dev/null
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# Set the base path for the patched version of cpmtools
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CPMTOOLS_PREFIX="$SCRIPT_DIR/cpmtools/"
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}
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# -----------------------------------------------------------------------------
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# Generate boot track from CPM components
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# Return: sets BOOTTRACK variable pointing to the temporary boot track file
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# that will be copied into the final disk image
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# -----------------------------------------------------------------------------
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genboottrack() {
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log "Generating boot track..."
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local boottrack
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new_tmp
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boottrack=$TMP
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make -C cpm build/cpm_bios.bin build/cpm_loader.bin > /dev/null
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# Manually cut-and-paste parts of the CP/M components to assemble the boot track
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# See README.md for more info about the boot track format
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dd conv=notrunc oflag=append status=none bs=256 if=cpm/build/cpm_loader.bin of="$boottrack"
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dd conv=notrunc oflag=append status=none skip=3072 bs=1 count=512 if=cpm/cpm_bdos.bin of="$boottrack"
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dd conv=notrunc oflag=append status=none bs=256 count=13 if=cpm/build/cpm_bios.bin of="$boottrack"
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dd conv=notrunc oflag=append status=none bs=1024 count=2 if=cpm/cpm_ccp.bin of="$boottrack"
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dd conv=notrunc oflag=append status=none bs=1024 count=3 if=cpm/cpm_bdos.bin of="$boottrack"
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BOOTTRACK="$boottrack"
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}
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# -----------------------------------------------------------------------------
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# Patch SLF80037.COM with keyboard map + locale string
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# Return: sets SLF variable pointing to the temporary SLF80037.COM file that
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# will be copied into the final disk image
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# -----------------------------------------------------------------------------
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patchslf() {
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local locale=$1
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log "Patching SLF80037.COM for locale=$locale..."
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local slf80037
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new_tmp
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slf80037=$TMP
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make -C applications build/SLF80037.COM > /dev/null
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cp applications/build/SLF80037.COM "$slf80037"
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# Patch keyboard layout
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dd conv=notrunc bs=1 seek=7424 status=none \
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if="applications/localization/keymap_${locale}.bin" of="$slf80037"
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# Patch 2-letter locale string at offset 303
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echo -n "$locale" | dd conv=notrunc,ucase bs=1 count=2 seek=303 status=none of="$slf80037"
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SLF="$slf80037"
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}
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# -----------------------------------------------------------------------------
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# Build one disk image for the given locale
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# -----------------------------------------------------------------------------
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makedisk() {
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local locale=$1
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validate_locale "$locale"
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local filename="disks/SANCO-CPM22_${locale}.bin"
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log "Building disk image: $filename"
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mkdir -p "$(dirname "$filename")"
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rm -f "$filename"
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# Generate boot track
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genboottrack
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"$CPMTOOLS_PREFIX"mkfs.cpm -f sanco -b "$BOOTTRACK" "$filename"
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# Patch SLF80037.COM "autoexec" with the requested locale file
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patchslf "$locale"
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"$CPMTOOLS_PREFIX"cpmcp -f sanco "$filename" "$SLF" 0:SLF80037.COM
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# Add core applications
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log "Adding core applications..."
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make -C applications assemble > /dev/null
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for comfile in "${CORE_APPS[@]}"; do
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"$CPMTOOLS_PREFIX"cpmcp -f sanco "$filename" "applications/build/$comfile" 0:
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done
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# Add extra applications copied from reference image
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log "Adding extra applications..."
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local apptmp
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new_tmp -d
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apptmp=$TMP
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for comfile in "${EXTRA_APPS[@]}"; do
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"$CPMTOOLS_PREFIX"cpmcp -f sanco SANCO8003_CPM_2.2fr.bin 0:"$comfile" "$apptmp/$comfile"
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"$CPMTOOLS_PREFIX"cpmcp -f sanco "$filename" "$apptmp/$comfile" 0:
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done
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}
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# -----------------------------------------------------------------------------
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# Main
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# -----------------------------------------------------------------------------
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prepare_cpmtools
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for loc in us fr it; do
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makedisk "$loc"
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done
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log "All disk images were successfully built!"

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