from_asm.sh

#!/bin/sh

# Use:
#   compile.sh name_without_suffix
#   compile.sh name_without_suffix start_addr
#   compile.sh name_without_suffix start_addr no_emul
#   compile.sh name_without_suffix start_addr emulator parameters
#   compile.sh name_without_suffix start_addr loader.bas
#   compile.sh name_without_suffix start_addr loader.bas no_emul
#   compile.sh name_without_suffix start_addr loader.bas emulator parameters

# ------------------- Parameter reading

[ $# -lt 1 ] && printf "Error: $0: Need filename!\n" >&2 && exit 1

name=$1
shift

[ ! -s "${name}.asm" ] && printf "Error: $0: \"${name}.asm\" not found!\n" >&2 && exit 2

case $1 in
    0x[0-9a-fA-F]*) addr=$(printf "%d" $1); shift ;;
    ''|*[!0-9]*) ;;
    *) addr=$1; shift ;;
esac

case "$1" in
    *.bas) load="$1"; shift ;;
esac

[ ! -z "$1" ] && emul="$1" && shift

printf "     name: ${name}.asm\n"
printf "  address: ${addr}\n"
printf "   loader: ${load}\n"
printf "     emul: ${emul}\n"
printf "arguments: %s\n" "$@"

if [ -f "${name}.bin" ] ; then
    old=$(ls -l "${name}.bin")
else 
    old="not exist"
fi

# ------------------- Compilation asm>bin

printf "Compilation asm>bin: ..."

! command -v pasmo >/dev/null && printf "Error: $0: pasmo not found!\n" >&2 && exit 4

if [ -z "${addr}" ] ; then
    pasmo -d                   "${name}.asm" "${name}.bin" > smaz
    pasmo --tap                "${name}.asm" "${name}.tap" 2>/dev/null
else
    pasmo -d    --equ __ORG="${addr}" "${name}.asm" "${name}.bin" > smaz
    pasmo --tap --equ __ORG="${addr}" "${name}.asm" "${name}.tap" 2>/dev/null
fi

error=$?      
[ ${error} != 0 ] && printf "fail!\nError: pasmo: ${error}\n" >&2 && exit 4
[ ! -s "${name}.bin" ] && printf "fail!\nError: $0: ${name}.bin not exist or is empty\n" && exit 5
printf "ok!\n"

printf "old: ${old}\n"
printf "new: " 
ls -l "${name}.bin"

[ -z "${addr}" ] && exit 0

# ------------------- Generate loader if addr exists

if [ ! -z "${load}" ] ; then
    if [ -f "${load}" ] ; then
        printf "The existing ${load} will be used\n"
    elif [ ! -z "${load}" ] ; then
        printf "Error: $0: basic loader \"${load}\" not found!\n" >&2
        exit 6
    fi
else
    load=loader.bas
    printf "Generate basic loader...\n"
    printf "10 LOAD \"\" CODE:CLS\n" > "${load}"
    printf "20 POKE 23672,0: POKE 23673,0: POKE 23674,0\n" >> "${load}"
    printf "30 RANDOMIZE USR ${addr}\n" >> "${load}"
    printf "40 PAUSE 1: LET s=PEEK 23672+256*PEEK 23673+65536*PEEK 23674: LET s=s/50: LET m=INT (INT s/60): LET h=INT (m/60): PRINT \"Time: \";h;\"h \";m-60*h;\"min \";INT ((s-60*m)*100)/100;\"s \";: PAUSE 0: STOP\n" >> "${load}"
fi

printf "Compilation bas>tap: ..."

! command -v zmakebas >/dev/null && printf "Error: $0: zmakebas not found!\n" >&2 && exit 6

zmakebas -o loader.tap "${load}"

error=$?      
[ ${error} != 0 ] && printf "fail!\nError: $0: ${error}\n" >&2 && exit 6

printf "ok!\n"

# ------------------- Concatenate loader with code and clean

mv "./${name}.tap" "./${name}_bin.tap"
cat loader.tap "${name}_bin.tap" > "${name}.tap"
rm loader.tap
rm "${name}_bin.tap"
[ -f loader.bas ] && rm loader.bas

# ------------------- Run the ZX Spectrum emulator

[ "${emul}" = "no_emul" ] && exit 0

if [ ! -z "${emul}" ] ; then
    ! command -v "${emul}" >/dev/null && printf "Error: $0: ${emul} not found!\n" >&2 && exit 7
    ${emul} "$@" "${name}.tap"
    exit 0
fi

for emul in "fuse -m 48" "fuse-sdl -m 48" "fbzx" 
do
    if command -v "${emul%% *}" >/dev/null ; then
        ${emul} "${name}.tap"
        exit 0
    fi
done

printf "No ZX Spectrum emulator found installed. Tried fuse, fuse-sdl and fbzx.\n"