[c64] JPL64 0.05 25/06/2025

JPL64 0.05 25/06/2025

• CIA 6526 work ongoing to make this cycle exact. now emulates subtle
• cycle delays for interrupt triggers
• VIC II - fixes for bus arbitration sequence BA & AEC
• SID filter changed again this time to a ladder filter
• fixes up the menus as requested.
• added a clean exit as requested

JPL64 0.04 18/06/2025

Super Mario Bros 64 (Zeropaige - 2019)

• second sid enabled any music that writes to d420 or d500 will use the second sid, sid located at $d400 is 6581 and the second     is the 8580 (only real difference is the filter profile)
• completely rewritten sid filters in favour of a fast ZDF core
• further cartridge support. most carts work now.
•  if you find any that don't please let me know.

JPL64 0.03

• sid filters, better still some issues but better
• sid envelopes, full, cycle exact, emulates ADSR bugs & quirks
• sid waveforms, fixed noise, now using mixed luts rather than logical and of waveforms 
• sid ring modulation, fixed better
• debugger works better, press f10 to enter and down arrow to step by cycle
• cia 1&2 fixes for other timer modes

JPL64 0.02

• fixed cia oneshot timers reloading latch
• fixes for easyflash HIROM banks
• added fullscreen mode selector
• fixed a bug in indirect JMP
• added vic sprite background collision emulation
• added vic sprite sprite collision detection
• started to lay ground work for debugger breakpoints

v0.01 - initial release

 Supported  
1531 Mouse 
Most Cartridge formats (there are a few issues here) 
D64 
IEC disk support 
TAP 
REU 16mb 
DigiMax Dual SID, [6581 @ d400] & [8580 @ d420 & d500]   

The Joysticks are mapped as follows 
Numeric keypad 1235 & 0 
joystick 2 789/ & 4 joystick 1  
F10 - Debugger on/off in debugger use cursor down key to single step a cycle. 
the debugger is WIP and severely lacking currently.  
F11 - Full Screen select a full screen mode from the setup menu before using this option. 
select a mode as close to 50hz as possible I always use 1920 x 1080 @ 50hz   HOME - options menu