<![CDATA[esxDOS BBS — RTC chips supported in esxDOS]]> https://board.esxdos.org/viewtopic.php?id=1008 Sat, 04 Oct 2025 12:54:27 +0000 PunBB <![CDATA[Re: RTC chips supported in esxDOS]]> https://board.esxdos.org/viewtopic.php?pid=2252#p2252 SCjoe wrote:

...
DS1307 in SpecNEXT
https://gitlab.com/victor.trucco/RTC

I try esxDOS 0.89 on SpecNEXT:

Question: There´s only a DATE DOT-command in esxdos089 package and no TIME Dot-Command?

Also I try different RTC.SYS. Some of them have size over 256 Bytes. And I read in FB-Group "ZX Spectrum Next" that esxDOS maximun driver size is 256 Bytes. So RTC.SYS which are bigger will not work on esxDOS.

What does RTC.SYS do? Is this a driver running in "esxDOS-OS". Or does it "only" init the RTC-Chip?

]]> Sat, 04 Oct 2025 12:54:27 +0000 https://board.esxdos.org/viewtopic.php?pid=2252#p2252 <![CDATA[RTC chips supported in esxDOS]]> https://board.esxdos.org/viewtopic.php?pid=1977#p1977 RTC72421A (or RTC72421B) in:
- divIDE add-on board by Velesoft
- Simple RTC interface by Jiiira
- ZX Sparrow SX by Jiiira
- and also implemented in cores of Speccy2010 and MB03+
https://velesoft.speccy.cz/zx/rtcmodule/index.htm
https://github.com/mborik/speccy2010/bl … tc.sys.a80

Epson 72423 in divMMC SinDiKat 2019 edition
https://vym.cz/divmmc/

DS1307 in SpecNEXT
https://gitlab.com/victor.trucco/RTC

]]> Fri, 08 Jan 2021 18:32:34 +0000 https://board.esxdos.org/viewtopic.php?pid=1977#p1977