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os.bat is now a triple chameleon: MS-DOS .bat, Unix .sh and x86 bootable floppy disk image

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This commit is contained in:
Georges Dupéron 2018-07-03 17:49:56 +02:00
parent ca7882fd2d
commit 63624488e9
1 changed files with 9 additions and 0 deletions
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9
example-os/os.asm
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@ -3,6 +3,7 @@
db `#!/usr/bin/env sh\n` db `#!/usr/bin/env sh\n`
db `: <<'EOF'\n` db `: <<'EOF'\n`
db `GOTO msdos\n`
times 0x7c78-0x7c00-($-$$) db 0 times 0x7c78-0x7c00-($-$$) db 0
@ -50,7 +51,15 @@ db 0xaa
db `\n` db `\n`
db `EOF\n` db `EOF\n`
db `echo Hello world from sh!\n` db `echo Hello world from sh!\n`
db `while sleep 10; do :; done\n`
db `exit\n` db `exit\n`
;; end of the SH section, everything until this point is skipped by MS-DOS batch due to the GOTO'
db `:msdos\n`
db `@cls\n`
db `@echo "hello world" from MS-DOS\n`
db `:loop\n`
db `GOTO loop\n`
;; Fill up to 1.44M with 0 ;; Fill up to 1.44M with 0
times (1440*1024)-($-$$) db 0 times (1440*1024)-($-$$) db 0