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Rev 1782 Rev 1783
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"push es" \
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"push es" \
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"pop ds" \
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"pop ds" \
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"mov ax, 0x3D00" /* open file, read-only (fname at DS:DX) */ \
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"mov ax, 0x3D00" /* open file, read-only (fname at DS:DX) */ \
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"int 0x21" \
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"int 0x21" \
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"jnc DONE" \
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"jnc DONE" \
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"xor ax, ax" \
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"xor ax, ax"     /* return 0 on error */ \
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"DONE:" \
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"DONE:" \
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"pop ds" \
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"pop ds" \
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parm [es dx] \
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parm [es dx] \
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value [ax];
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value [ax];
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