Notice: Trying to access array offset on value of type bool in /mnt/cpcwiki-httpdocs/includes/libs/IPSet.php on line 243

Notice: Trying to access array offset on value of type bool in /mnt/cpcwiki-httpdocs/includes/libs/IPSet.php on line 246

Notice: Trying to access array offset on value of type bool in /mnt/cpcwiki-httpdocs/includes/libs/IPSet.php on line 243

Notice: Trying to access array offset on value of type bool in /mnt/cpcwiki-httpdocs/includes/libs/IPSet.php on line 246
Changes - CPCWiki
Open main menu

Changes

URTC-8 Universal RTC for Z80 computers

5 bytes added, 13:49, 24 April 2019
/* Technical info */
== Technical info ==
This is the technical application manual for the 72421 RTC chip used in uRTC-8.   [[File:Rtc72421 appman.pdf]]  Of particular interest are the 16 registers.:
RTCBASE .equ 0A0h ; Default uRTC base I/O address
rtcctrlE .db RTCBASE+0Eh ; control register E
rtcctrlF .db RTCBASE+0Fh ; control register F
 
 
[[File:Rtc72421 appman.pdf]]
JonB
412
edits