1 Topic by SCjoe

  • SCjoe
  • esxDOS User
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  • Registered: 2020-04-05
  • Posts: 41

Topic: RTC chips supported in esxDOS

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

2 Reply by Luzie

  • Luzie
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  • Registered: 2013-09-26
  • Posts: 389

Re: RTC chips supported in esxDOS

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?