KJ3241X1-BK1 12P4710X032 SE4006P2 memory card feedback device

KJ3241X1-BK1 12P4710X032 SE4006P2 memory card feedback device

Technical data of product parameters

147Bug is physically contained in two 32-pin DIPKJ3241X1-BK1 12P4710X032 SE4006P2,
providing 256KB of storage. Both EPROMs are necessary regardless
of how much space is actually occupied by the firmware, because
one device is for the even bytes and one is for the odd bytes.
147Bug is written in assembler code, providing the benefits of
maintainability and position-independence.
The executable code is checksummed at every power-on, and the
result (which includes a pre-calculated checksum contained in the
KJ3241X1-BK1 12P4710X032 SE4006P2) is tested for an expected zero. Thus, if the contents of the
KJ3241X1-BK1 12P4710X032 SE4006P2 are modified, the checksum must also be modified.Autoboot is a software routine that can be enabled by a flag in the
battery backed-up RAM to provide an independent mechanism for
booting an operating system. When enabled by the Autoboot (AB)
command, this Autoboot routine automatically starts a boot from
the controller and device specified. It also passes on the specified
default string. This normally occurs at power-up only, but you may
change it to boot up at any board reset. NOAB disables the routine
but does not change the specified parameters. KJ3241X1-BK1 12P4710X032 SE4006P2
The Autoboot enable/disable command details are described in
MVME147BUG 147Bug Debugging Package User’s Manual. The
default (factory-delivered) condition is with autoboot disabled.
At power-up, if Autoboot is enabled, and providing the drive and
controller numbers encountered are valid, the following message
displays on the system console:
“Autoboot in progress… To abort hit <BREAK>”
Following this message there is a delay while the debug firmware
waits for the various controllers and drives to come up to speed.
Then the actual I/O is begun: the program pointed to within the
volume ID of the media specified is loaded into RAM and control
passed to it. If, however, during this time, you want to gain control
without Autoboot, hit the BREAK key.

Product picture display

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Main products: various modules/cards, controllers, touch screens, servo drives.

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