Sunday, November 22, 2020

#CSpect V2.13.00

#CSpect V2.13.00 changes

Note: I am aware most virus scanners are rejecting this. Apparently it's because I open files in "shared" read/write mode. This is so that SD cards can still be written to while the emulator is running. You'll need to add an exception if you wish to use it.

This is a special 'experimental' release so that everyone can try out the new "rewind" feature in the debugger. Specifying -rewind on the command line, or typing 'REWIND' in the debugger will enable/disable it.
This will then let you step 'backwards' using SHIFT+F7, undoing whatever the CPU has just exectued. Memory and CPU state should be solid (along with MMU and ROM usage), and I've started to add in sprite access as well - but this is more untested.
It's good fun, and super handy for debugging when you need to just roll back a little bit....
  • Fixed physical breakpoints in the plugins
  • (Highly) Experiminetal "rewind" debugger feature. Simply press SHIFT+F7 to step back. Currently tracks all RAM access and Sprite port access.There's bound to be HEAPs of issues and bugs with this, but for simple debugging, it should be fine.
  • Added UnStep in plugin system
  • Added "REWIND" debugger command, to allow you to switch the CPU history on/off dynamically
  • Added Debugger message display. Now reports errors when you use a non-existant label etc.
  • Fixed a bug in the rewind of MMUs
  • Swapped to 2.13 coz I was bored of 12.??





Thursday, November 19, 2020

#CSpect V2.12.38

#CSpect V2.12.38 changes

Minor changes and fixes...
  • Added NextRegs $2C and $2E (DAC mirrors)
  • DMA read flags (Bit 5 and Bit 1) added and fixed.
  • Added "_" to BASIC key detection
  • I "think" I've fixed the stuck BASIC mode keys (where : just gets stuck and repeats....)
  • Added OpenAL32.dll to the zip.... turns out that's allowed.
  • on loading of a NEX file, NextRegs are set to what the OS NexLoad sets
  • 32bit mode should work this time....in theory





Wednesday, November 11, 2020

#CSpect V2.12.37

#CSpect V2.12.36/35 changes
  • RAM is now filled with random bytes on power up to help simulate the real machine
  • -fill=$XXXXX allows you top specify a specific byte sequence to fill RAM with
  • Debugger: general layout adjustment.
  • Debugger: text colour changes when user bar over the top for easier reading
  • Debugger: $ added to all hex numbers
  • Debugger: Hex numbers are now coloured for easier spotting
  • Debugger: Added "peek()" of all memory access to the left of the disassembly line
  • Debugger: Added 16bit "peek()" of all 16bit register load/store locations
  • Debugger: Added a small permanent memory dump using 16bit registers as the base address
  • Debugger: ` now displays the current screen in the debugger (Keypad-Enter also works)
  • Debugger: Memory window bookmarks added. CTRL+SHIFT+[0-9] to set, CTRL+[0-9] to jump to.
  • CSpect should now run on 32bit and 64bit machines
  • Now detects if the shader fails to compile, and switches off the shader mode
  • Fixed port $123b 16k bank offset mode
  • Fixed unified attached sprites

#SNasm V3.0.3
Brand new C# version, which will now run on Linux and macOS. I'm sure there are still bugs in here, so released for community testing. It assembles everything I've got, so should be fine.



Tuesday, August 25, 2020

#CSpect V2.12.36

#CSpect V2.12.36/35 changes
  • Fixed F_RENAME to use IX instead of HL (now working)
  • Fixed sprite clipping (I think)
  • First pass at Tiles and Tilemaps in bank 7
  • Faked esxDOS loading now returns an "access denied" error, if it tried to open a file that is write protected
  • Transparent border now working (ULA off)
  • Added F_RENAME (untested)


Saturday, July 11, 2020

#CSpect V2.12.34

Quickly added in the last missing screen mode...

Edit: Fixed a minor issue where hex editing was case sensitive... so you needed to press SHIFT+letter... doh.

Edit: Updated for a couple of new dev features

#CSpect V2.12.34 changes
  • Fixed HEX editing in the memory window so that it's case insensitive. (don't have to press SHIFT)
  • ReadMe.txt now holds the "manual" part of this text file, and this is now "just" the version info.


#CSpect V2.12.33 changes
  • You can now click on the memory window to edit bytes directly by typing HEX values into it ENTER or click off to stop
  • You can now press KEYPAD_ENTER to display the game screen while in the debugger

#CSpect V2.12.32 changes
  • Fixed reg $8E bit 3 usage - don't change RAM mapping
  • Fixed Layer 2 palette colour offsets (NextReg $70)
  • NextRegs $6E and $6F now return top 2 bits as 0


Wednesday, July 01, 2020

#CSpect V2.12.31

Quickly added in the last missing screen mode...

#CSpect V2.12.31 changes
  • Added DAC's B,C and D
  • Added SAVE to the debugger: SAVE "NAME",add,len, SAVE "NAME",BANK:OFFSET,length, SAVE "NAME",BANK:OFFSET,BANK:OFFSET
  • You can now read DMA Registers
  • CTRL+F7 now executes to cursor in the debugger
  • Added the demo "mod_player.nex" added to #CSpect package


Tuesday, June 09, 2020

#CSpect V2.12.30

Quickly added in the last missing screen mode...

#CSpect V2.12.30 changes
  • Layer 2 palette offset added to 256,320 and 640 modes.
  • Fixed a crash when a write to E3 happens, and the roms haven't been loaded.
  • Fixed a crash in the debugger when you entered a bank:offset and the offset was an invalid symbol
  • Tilereg $6E set to $2C on power up - same as hardware. (don't assume though, set it)
  • Tilereg $6F set to $0C on power up - same as hardware. (don't assume though, set it)

SNasm V2.0.23 changes
  • Fixed a crash when an expression has a divide by 0


Sunday, May 17, 2020

#CSpect V2.12.29

Quickly added in the last missing screen mode...

#CSpect V2.12.29 changes
  • 640x256x4 Layer 2 mode added


#CSpect V2.12.28

Fixed DMA Audio playback using the pre-scaler

#CSpect V2.12.28 changes
  • Fixed DMA prescaler (usually used for digial audio)


Friday, May 15, 2020

#CSpect V2.12.27

Fixed a crash in AY Audio due to the extra wait states added to memory read/write when using faked esxDOS.
I've also updated the link in the side banner on the right - keep forgetting to do that.....

#CSpect V2.12.27 changes
  • Fixed a crash in AY Audio when loading in large files via fake esxDOS.