HD404356 Datasheet, PDF (98/100 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer

HD404358 Series
Notes on ROM Out
Please pay attention to the following items regarding ROM out.
On ROM out, fill the ROM area indicated below with 1s to create the same data size for the HD404354,
HD40A4354, HD404356 and HD40A4356 as an 8-kword version (HD404358, HD40A4358). The 8-kword
and 16-kword data sizes are required to change ROM data to mask manu facturing data since the program
used is for an 8-k or 16-kword version.
This limitation applies when using an EPROM or a data base.
ROM 4-kword version:
HD404354, HD40A4354
$0000
$000F
$0010
$003F
$0040
$0FFF
$1000
$1FFF
Vector address
Zero-page subroutine
(64 words)
Pattern & program
(4,096 words)
Not used
ROM 6-kword version:
HD404356, HD40A4356
$0000
$000F
$0010
$003F
$0040
$17FF
$1800
$1FFF
Vector address
Zero-page subroutine
(64 words)
Pattern & program
(6,144 words)
Not used
Fill this area with 1s
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