20211224_c97f06a Release

Introduction

This is a stable release (from the master branch).

(the previous stable release was 17th September 2021)

Improvements (Highlights)

• Offload some of the capure loop to the GPU
• Official Support for Pi Zero 2 W
• Fixes/improvements for Pi 1/2/3/4 (unsupported but should work)
• Single (universal) binary now used for Pi 0-3 models
• Fixes/Improvements to BBC Mode 7 calibration code
• Improvements to Genlock (limit slew rate when changing modes)
• Update to latest Raspberry Pi Foundation Firmware (fixes minor overvoltage issue on Pi Zero)

Additional Profiles

• ABC80 (a Swedish machine)
• Enterprise
• Intellivision
• NEC PC-98 (and Epson clones)

Detailed list of changes

Raw changes since last stable release are:

• c97f06a Update Analog V3 board with changed component values from wiki
• 501286d Fix osd update for screencap and reboot warning
• 09f9671 Update mode7 rounding fix
• 954910b Update slew rate threshold
• 10b7ffd Restrict genlock slew rate when changing modes
• 51bc201 Update profiles
• 420095e Fix double width capture
• bed18d7 Set top bits of screen buffer pointer correctly in 16bpp mode
• 50a253d Instruction reorder
• a048cbc Fix framebuffer logging and display_list_offset
• 6f155c5 Ensure top bits of frame buffer address match
• ab669cf Add missing blank files
• 08b22bf Update firmware to latest stable
• 5561da7 Update config files to workaround unprogrammed otp zeros
• 1d9ef10 Update firmware to latest build with overvoltage fix
• 12ad6a7 Identify Pi zero and Pi 1 separately
• a6ad346 Further fix of startup message
• dc16b86 Fix startup message in interlaced mode
• 6f8977b Fix overclock message
• 3465fd0 Downgrade firmware to 21-Apr-21 as recent firmware overvolts the core
• 4fdcb8e Fix powerup message not working on some configurations
• 367e88f Update profiles
• a198cb1 Add batch files to switch between GPU and ARM capture
• d84104b Fix autocalibrate in teletext 12bpp mode
• 00f49a3 Fix screencap message
• a420b4b Fix OSD not displayed on screencaps in 4 & 8 bpp modes
• 2d838e7 use faster return ( faster for cortex a53)
• ef08fbe Revert high latency detection regression
• 7e25eb9 Update Enterprise profile
• d2e7bc3 Fix C128 profile
• 5141c2e update profiles
• 67999eb Add intellivision profile
• cb42b5b Rename to "Inverted composite"
• e7659ed Check clock rate change
• 726c588 Update config.txt files
• 4d1fcc6 Add option to lock to composite blanking instead of sync
• a9f2202 Add intellivision palette
• e3bc22d Fix regression that caused a hangup on double reboot
• b5a8701 Tweak instruction order
• bc4b925 Update firmware
• 5c30661 Filter out PaxHeader folders
• f419153 Additional delays
• fb15690 Improve disable_overclock feature
• a0e8867 Increase delay before rebooting
• 6ab4b7f Fix display list issue stopping resolutions 1024x768 & lower from working at 16bpp
• d9b5671 Simplify high latency detection
• 86714bc Update profiles
• 52ab7b6 Improve clock setting
• ba6c2bd Reduce number of psyncs to capture during preload
• 0ec5c46 Don't use high latency capture on Pi zero/w
• 23d870f first cache preload has OSD bit set
• e94451f Add enterprise profile
• 148a04d Use same processor build options as Pi0-3 (ready to include Pi4 in universal binary)
• 0039079 Reduce logging messages during mode change
• d879a81 Workaround for SD Card Initialization bug on Pi 4 (#253)
• cab728b Fix heap corruption bug when sd_card_init() fails (#253)
• 2183344 Fix 10.3 compiler string warnings
• 33d4b1d Increase size of supervisor stack (RGBtoHDMI runs in supervisor)
• 92eca23 Improve handling of PLLD as sampling clock on Pi4
• aee3549 Fix build warnings
• 912e8e1 Update genlock to work on Pi 4
• bf2b485 Fix display of refresh rate
• 965882b Add eceute permissions to configure_rpiA4.sh
• be87cba temporarily disable screencaps on Pi 4
• 2731fd1 Improve refresh rate reporting
• 8e5ce6a Disable unaligned access (may not work across armv6-v8 on same binary)
• 171fff3 Update lodepng
• 9dfcd66 Update 1600x1200@50Hz definition to use specific timing rather than CVT (Fixes glitch in rpi4)
• 607b7d8 Revert to PLLD and change core divider as well as per divider
• ef330ca Add set_clock_rate
• d1f4701 Use PLLC on Pi 4
• 006c117 Improve speed of peripheral address reads
• b4b5fc1 Align png buffers
• 0135686 Further prediv fix
• d2cca8a fix prediv not present on pi4
• f464205 Dont overclock core on Pi4 unless >100Mhz
• c1a30a6 Update 16bpp display list manipulation code to cope with BCM2711 (Pi4)
• ad85656 Remove EMMC_DEBUG from default debug build (delays bootup significantly)
• 8dd1960 Update horizontal resolution for Pi4
• 2fc9014 Add clock IDs
• adc1032 Update ARM build limits
• 31ca539 Update build options
• 0014d5b Add build option for ARM capture on Pi4 and add ARM version of config.txt
• 925b345 Update Arm build options and old CPLD folders
• 8a99ef7 Add support for old CPLDs on GPU capture
• 198c023 Update Arm conditional build options
• abdcaeb Fix conditional compilation
• 1344b38 Fix build scripts
• eb8533c Update defs for Pi 4
• 37db5bf Update overclock limits for various Pi models
• f36f194 Add high latency capture option in GPU mode (slightly faster but only suitable for 9/12bpp)
• b246f19 Improve mode7 auto calibration range + add auto overclock option for Pi 2 & 3
• 5ea5bfb Final part of universal binary conversion
• d520165 Update scripts
• ee2d739 Update profiles
• 6ce9724 Second part of universal binary conversion
• 60453dc First part of universal binary (Pi0,1,2,3) conversion
• 05b649f Change assembly code to use variable peripheral base
• 8d65fb0 Change sdcard to use variable peripheral base
• c295151 Change C code to use variable peripheral base
• 9733f11 Try x12 multiplier in mode7 calibration if either errors or window errors are non zero
• 3b6ad22 Merge Pi2 and Pi3 support into one binary
• ff5cfe6 Fix garbage on right hand of screen in teletext mode with GPU capture
• 8d0ca8b Added NEC PC-98 and Epson clones profiles.
• 24658f1 Added a profile for the Swedish computer ABC80
• a9d3970 Read start of screen from mailbox when setting cached area
• 208be4c Update cached screen
• c0402a6 Fix permissions on configure_rpiA.sh
• 5c798a6 Fix Pi2 screen start
• 01ed279 Update configure_pll
• 3e065e3 Fix pll calculation on Pi4
• b008efb Fix RAM speed value
• af49a63 Workarounds to get Pi4 running on PLLA
• 4b939cf Fix Pi4 SD card not working
• e64eace Update config.txt
• ba87469 Update defaults in Amiga CPLD
• 4537048 Add videocore build script
• 29c1b7b Simplify font selection
• e3e48e9 Update profiles
• c90b12c Re-order some instructions in SKIP_PSYNC
• 62368d1 Run old CPLDs on ARM build only
• 9fb5b05 Update line timeout
• 7e3ff3f Re-add cache preload in in band signalling
• 1cfb793 Include Sam Coupe in hidden profiles list
• fbc542c remove remaining support for very old CPLDs in GPU build
• d168b7e Add build info to bootup message
• d5ad430 Fix issue with cache preload on GPU build
• 4405c28 Run Arm capture on Pi 1
• 85986ca tweak pipelining
• 8124a82 Add arm capture build option
• 744a042 Update RPI2 support
• 7b1176d Optimise MBOX reading code
• 5115325 Mark all samples with FINAL_BIT at end of capture
• f4da323 Fix stall issue with 12bpp capture into an 8bpp frame buffer
• a6f8fbe Update videocore comments
• c55af86 Improve benchmarks
• cb3eaee Add GPU capture for Pi zero and Pi zero 2W
• 19d63b7 Update overclock limits for Pi zero 2
• 8216d26 Update mailbox interface for GPU
• 1231e35 Update NTSC capture for GPU
• efcb123 Update mode7 capture for GPU
• a9bdd08 Update in band capture for GPU
• ec1e3a7 Add default 9bpp & 1bpp simple modes
• 8e4797f GPU videocore capture source
• 9a1b1b0 Add vasm assembler for videocore IV
• 4f4a5a9 Update display of window info
• 0ef322c Fix calibration display
• c969005 Improve calibration window handling and display window errors
• 4e64f13 Fix issue with osd update during CPLD programming on Pi zero 2W
• 61494c9 Prioritise 3 wide zero error window over single zero error ( issue #247 )
• 46d7696 Exclude Sam Couple from zero 2W profile filter
• dac13f6 Update Pi zero2W warning message
• cf2477e Capture loop code optimisation from dp11
• e7f96b7 Fix Atari 800 double width sample count
• 31228ff Optimise Pi zero 2 capture code and modify warning
• b949669 Cache part of screen memory on Pi zero 2 and update mode7 deinterlace to use it
• 67d6c48 Fix double width NTSC issue
• 37daa5d Add GPIO benchmark
• 90ee1f8 Update multicore capture to work with all capture loops
• c493d21 fix assembly warnings
• 5c0bc8c Further updates to config.txt
• a468d41 Remove unused source files
• 8f9942a Temporarily hide 9bpp & 12bpp profiles that don't work on Pi zero 2
• ca263ba Update config.txt for Pi zero 2W support
• 90da0b6 Update Pi boot files for Pi zero 2W support
• 2bd01ee Interlace detection only when Interlaced video or sync selected unless BBC mode
• eced2ee Add 9bpp and 1bpp support for simple mode
• 72ba364 Added NEC PC-98 and Epson clones profiles.
• 129d90e Update ABC80.txt