Changes
Contains a HD146818P ([[PC compatible RTC chip|PC-style RTC]]), a TMP[[Z80 PIO|Z84C20]]P ([[Z80 PIO]]), three logic chips, an 8bit general-purpose I/O port (9pin male DSUB), and a rechargeable 3.6V battery.
FBE0h Dk'tronics Real Time Clock - probably [[Z80 PIO]] Port A Data ([[PC compatible RTC chip|HD146818P]] RTC Data bus) FBE1h Dk'tronics Real Time Clock - MAYBE [[Z80 PIO]] Port B Data (General Purpose 8bit I/O Port) FBE2h Dk'tronics Real Time Clock - MAYBE [[Z80 PIO]] Port A Control FBE3h Dk'tronics Real Time Clock - probably [[Z80 PIO]] Port B Control FBE8h Dk'tronics Real Time Clock - "4bit latch" '''(details unknown purpose)'''
== Software ==
Unknown how the timestamps are stored on disk? The normal AMSDOS filesystem / directory entries don't include timestamps.
== Timestamps ==
1 byte hour in BCD format
1 byte minute in BCD format
== Photos ==
<gallerycaption="dk'tronics Real Time Clock - 464/664 version">
image:RTC 001.jpg
image:RTC 002.jpg
image:RTC 011.jpg
image:RTC 012.jpg
</gallery>
<gallery caption="dk'tronics CPC6128 Real Time Clock 300dpi scans by Robcfg- 6128 version">
Image:RTC_Front.jpg|Front
Image:RTC_Back.jpg|Back
</gallery>
== Reviews ==
* Reviewed in [[Amstrad Computer User]], July 1987, pages [[:Image:Amstrad Computer User8707 028.jpg|28]] and [[:Image:Amstrad Computer User8707 029.jpg|29]].
== Manuals ==
* [[Media:Dktronics RTC Manual English.pdf|Dk'tronics RTC Manual (English)]]
* [[Media:Dktronics RTC Manual German.pdf|Dk'tronics RTC Manual (German)]]
== Downloads ==
* [[File:DktronicsRtcDriver.zip]] - none such?
[[Category:Hardware]] [[Category:Peripherals]]
