| 摘要 |
<p>PURPOSE:To inspect recording and reproduction in a manufacture line, etc., without by host CPU and to enabling the secure operation inspection without installing nor connecting the CPU by allowing a recording and reproducing circuit to start secure recording and reproduction by making a disconnection from the host CPU. CONSTITUTION:The recording and reproducing circuit is disconnected from the host CPU to start the independent recording and reproduction. Namely, when the circuit is disconnected from the host CPU, a 8-bit general-purpose microcomputer IC1 reads test start data without fail because pull-up resistances R1-R8 are provided on data buses D0-D7. This state is the condition for starting the independent recording and reproduction. Therefore, the recording and reproduction of only a magnetic recording and reproducing device in, for example, the manufacture line are performed under this condition, and consequently the secure operation inspection is performed without installing for connecting the host CPU.</p> |
