New ZEsarUX 5.0

Emulator and emulator development specific topics
Post Reply
User avatar
Posts: 176
Joined: Tue Mar 11, 2014 4:30 pm

New ZEsarUX 5.0

Post by chernandezba » Fri Apr 21, 2017 8:43 pm


ZEsarUX 5.0 is out! :)

You can download it from the URL:

Finally I have succeded emulating Sinclair QL. I dedicated a lot of hours trying to guess how the keyboard work.
There is little documentation and I had to do lots of dissassemblies of the ROM and testing keyboard to know how it work...
So, hard work, this is a Quantum Leap, so this is a new major version, 5.0!
Complete changelog:

Added Sinclair QL emulation
Added remote command protocol. You can do enhanced debugging on ZEsarUX by using a telnet client.
There are a lot of commands, even many commands exclusive to this protocol and not found on the GUI, like:
* load-source-code
* hexdump-internal
* set-register

Added Easter Egg ;)
Added Specdrum emulation
Added RZX playback support
Added Multiface One, 128 and Three emulation
Added setting to write configuration file
Added menu item to reload IDE and MMC contents from file. You can now modify a used file outside the emulator and reload its contents
Added autosave snapshot at fixed interval
Added hardware debug port to output ascii characters or numbers directly on host console
Added two unused ports from the ZXI pool for some internal ZEsarUX features. See docs/zesarux_zxi_registers.txt
Added Hotswap from 128k to +2A, and +2A to 128k
Added File Viewer
Added support for drag&drop on Mac OS X, SDL2
Added support for OpenGL rendering on Mac OS X Cocoa driver
Added drawn piano for AY Piano menu setting (on all video drivers except text drivers)
Added Man Software GUI Style
Added setting to change DivIDE/DivMMC eprom firmware file
Added setting to allow writing to DivIDE/DivMMC eprom firmware
Added setting to disable autoframeskip
Added setting to set breakpoints from command line
Added setting to deny changing turbo mode when booting ZX-Uno and on bios
Added setting to disable beeper
Improved Debug CPU Window: now you can switch between different views:
1) 1 opcode, cpu registers, other internal registers
2) 9 opcodes, other internal registers
3) 15 opcodes
4) 9 hexdump lines, other internal registers
5) 15 hexdump lines
Fixed text to speech routine when sending non-ascii character
Fixed bug reading ULAplus register 64
Fixed bugs paging DivIDE/DivMMC
Fixed starting display row on ZX80/81/ACE, with border disabled and realvideo mode (was broken since 4.0)
Fixed reading from paging port on 128k and +2 machines: in this case, the same value read from the idle bus port is sent to the paging port
Fixed setting timings changing from Pentagon to non Pentagon machine
Fixed bug mapping real joystick buttons and axes with same number
Fixed bug when Jupiter Ace machine and border disabled
Updated Z88 OZ V4.7
Some other minor bugfixes and improvements

ZX Second-Emulator And Released for UniX

User avatar
Posts: 124
Joined: Sun Aug 10, 2014 9:58 pm
Location: Italy

Re: New ZEsarUX 5.0

Post by marste » Sun May 07, 2017 4:45 pm

Hi Cesar!

I was trying to use the debug features of the emulator but found it quite difficult to start. I was able to enable debug mode, connect via telnet, set a breakpoint (with the only place to find reference was in the ql notes) but not able to run a full debug session...

There is a manual for the new features ("help command" is pretty limited...)? Or a trainer example session?

Good work and I can say it run perfectly on Linux!

Thank you

User avatar
Posts: 176
Joined: Tue Mar 11, 2014 4:30 pm

Re: New ZEsarUX 5.0

Post by chernandezba » Sun May 07, 2017 6:45 pm


Breakpoints format are documented on the menu, go to debug-breakpoints and press F1. You will find there all the valid expressions for breakpoints. There's no ZEsarUX documentation file, all the documentation are the help menus, the FAQ file and the "help command" via telnet as you have already seen. You may also look at the source code and also ask me if you have any question ;)


ZX Second-Emulator And Released for UniX

Post Reply