[BBC] BeebEm 4.17 20/06/2021

[1] @ !!! Poniedziałek, 21 Czerwca 2021 00:04 CET [30-06-2020 13:50 CET]

[BBC] BeebEm 4.17 20/06/2021

BeebEm to emulator całej gamy modeli mikrokomputera BBC Micro,  który zawojował Anglię na początku lat 80 i stanowił groźna konkurencję dla powstałego mniej więcej w tym samym czasie Spectrum i C64. Komputer opracowano z myślą o platformie edukacyjnej (BBC Computer Literacy Project) - Micro stał się bohaterem w programów telewizyjnych, czy też był wykorzystywany jako platforma (Master 128) w jednym z ciekawszych projektów "Doomsday Project" (którego nośnik, śmiało można nazwać prekursorem dzisiejszego CD-ROMU).

Version 4.17 (Chris Needham, Dominic Beesley)

  • Writes to the sound chip are now allowed while sound is disabled. This ensures that the sound chip is in the right state if sound is later enabled.
  • Fixed sound frequency write. Setting frequency to zero should initalise the counter to 1024.
  • The cursor is now disabled based on CRTC register R8 (see AUG p.366). This fixes the cursor display in Wizzy's Mansion and Pedro.
  • Debugger improvements:
    • Fixed instruction 4B (ALR imm).
    • Set the initial input focus so that you can now open the Debugger window and type commands without having to click in the edit box.
    • Added 'over' command. This steps over a JSR instruction, i.e., runs to the next instruction in memory after the JSR.
    • Added a command to show existing labels.
    • Added a command to clear the output window.
    • Fixed help output to show all commands and aliases.
    • Fixed the 'file' command to allow the full 64k address space to be saved.
    • The following commands now prompt for a filename if not given: labels load, save, file, script.
  • Mouse input improvements:
    • Changed the right mouse button to control joystick button 2, which is useful for games such as Phoenix and Ripcord that use both joystick buttons.
    • Fixed the "Hide Cursor" option, which caused the cursor to flicker when using the mouse-stick options.
    • Added mouse capture option. To enable, select the "Capture Mouse" menu item and click in the window area. To release the mouse, press Ctrl+Alt.
    • Fixed "AMX L+R for Middle" option.
    • Fixed bug where Master 512 mouse input would sometimes be reversed. Master 512 configures interrupt on raising and faiilng CBx edges alternately. Instead of guessing which should be next, check selected edge in the PCR register.
    • Improved mouse responsiveness when captured.
  • Fixed Mode 7 run-length optimisation in the video renderer
  • Fixed the teletext font file. The 'W' character had one pixel missing.
  • Improved Mode 7 screen capture to avoid distorting the image. Use the 640x512 option for best results.
  • Reset double-height state at start of mode 7 screen. This fixes an issue where, if double height is enabled on the last character row of a mode 7 screen, the top row of the screen would also be treated as double height. This effect could be seen in the Twin Kingdom Valley instructions pages.
  • Fixed Solidisk Sideways RAM emulation. Writes to RAM bank are selected by User VIA output port B even if the bank selected by &FE30 is writable.
  • Fixed Preferences.cfg file backwards compatibility.
  • Fixed reading the tube coprocessor selection from BeebEm 4.14 Preferences.cfg files.
  • Fixed crash when loading multiple ADFS images from the command line.
  • Fixed PrinterEnabled preferences option, which was not being saved/loaded correctly.
  • Added BeebEm.user.props.example file and updated the instructions for how to compile BeebEm

Version 4.16 (Chris Needham, Dominic Beesley)

Cylon Attack (A&F Software Ltd., 1983)
  • Reintroduced Master 512 co-processor support, following change to the MAME  source code license.
  • Added Torch Z80 utility discs and renamed ROM files.
  • Fixed Integra-B sideways RAM writes.
  • Improved Sprow ARM7TDMI co-processor clock speed accuracy.
  • Debug watches now update while the emulator is running.
  • Fixed disc image auto-boot.
  • Fixed Model B MODE 7 emulation with screen memory at &3C00.
  • Fixed 6502 opcodes and removed the Ignore Illegal Instructions menu option.
    • Repton tape loader now works (instructions: 04, 0C, 14, 1C, 34, 3C, 44, 54, 64, 74, 89).
    • Zalaga tape loader now works (instructions: 04, 3C, 44, 54, 5C, 64, 74, 7C).
    • 3D Grand Prix tape loader now works (instruction &80).
    • KIL instructions are executed repeatedly, to emulate hanging the machine.
    • RMBn, SMBn, BBRn, BBSn instructions in 65C02 copro are now implemented.
    • Fixed instruction cycle times.
    • All 6502 and 65C02 opcodes are now recognised in the debugger.
  • Removed the "Incorrect disc type selected" warning dialog, which was reporting false positives on valid .ssd files.
  • Include complete video state in UEF save state files.
  • Clipboard Paste handling no longer overwrites memory.
  • Fixed Music 5000 panning, the left and right channels were reversed.
  • Fixed use of Jim page select register with Music 5000.
  • Added -CustomData command line option.

Tagi: Bbc, Retro, Micro, Elite

wstecz21/06/2021 00:04
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