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WHATSNEW.md

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What's new in version 1.2.30

  • fix compiler memory leak

What's new in version 1.2.29

  • update functions document
  • fix extern table out of order
  • add simple hexdump command
  • add -p (paginate) option to cat and hex commands
  • cat terminate on EOF (0x1A) char

What's new in version 1.2.28

  • further optimization of C compile memory management
  • Vi recognizes and understands the EOF (0x1a) character. This eliminates the need do delete CTL-Z chars at the end of files transferred by xmodem which transfer files in 256 byte chunks regardless of actual file size.

What's new in version 1.2.27

  • fix crash comppiling to executable

What's new in version 1.2.26

  • Update disassembler module
  • Update littlefs to version 2.7
  • Implement standard calloc function

What's new in version 1.2.25

  • rebuilt with SDK 1.5.1

What's new in version 1.2.24

  • optimize memory management
  • fix compiler memory leak

What's new in version 1.2.23

  • fix cat command crash
  • Add support for get_rand_32 SDK function

What's new in version 1.2.22

  • Recompiled with gcc 12.2, SDK 1.5, littlefs to 2.5.1

What's new in version 1.2.21

  • support builing for vgaboard with filesystem on microSD

What's new in version 1.2.20

  • fix stack allocation for local multi dimensional arrays
  • fix sizeof for multi dimensional arrays, was limited to 1 dimension
  • fix small global data limit for strings literals
  • add strtol string function and compiler version flag in executable's header
  • suppress gcc12 newlib linker warnings

What's new in version 1.2.19

  • fix compound assignment bug
  • implement #pragma uchar, tells compiler to use unsigned char variables
  • grow symbol table dynamically
  • fix global greater than 4K bug

What's new in version 1.2.18

  • a few more peep hole optimizations
  • hide hidden files, add -a option to ls command
  • update tar to preserve executable attribute
  • restore missing instruction at end of function disassembly (cosmetic)
  • add cmd line option to disable peep hole optimizer
  • Fix bugs with dgreadln

What's new in version 1.2.17

  • fix command line parameter setup, broken by new invocation code
  • fix missing source line in error msg
  • update examples
  • fix potential vi memory leak
  • drop peep hole, does more harm than good
  • fix forward function declaration disassembly
  • robust user code invocation
  • add compiler source comments

What's new in version 1.2.16

  • optimize function calls. save/restore fewer registers
  • adjust exit function
  • update peep-hole optimizer, add array indexing optimization
  • add quicksort example
  • line buffering serves no purpose, remove it.

What's new in version 1.2.15

  • Another critical printf fix
  • optimize float relational operators
  • trig function optimization

What's new in version 1.2.14

  • Merge CC and VI uninitialized globals to save memory.
  • Fix printf bug. prevent uncontrolled stack growth
  • Check executable attributes on tab completion.
  • Fix executable attribute on copy and refactor tab completion.

What's new in version 1.2.13

  • optimize integer compare operators
  • fix broken /= *= += -= for floats

What's new in version 1.2.12

  • fix load data init bug preventing older code execution
  • save history on quit and usb reboot
  • add pentamino example
  • more peep hole optimizations
  • allow constant integer or float expressions as #define values

What's new in version 1.2.11

  • command history survives reboots
  • integer arrays were not always word aligned, causing crashes on CM0
  • allow negative values in simple defines
  • fix executable search path misbehavior

What's new in version 1.2.10

  • binary executable now pshell version independent
  • fix search path bug

What's new in version 1.2.9

  • executable binaries invoked directly by name, remove run command
  • executable search order is current directory followed by /bin directory
  • verify executable is compatible with current version of pshell, suggest recompile if not

What's new in version 1.2.8

  • compiler supports the -o option to create binary executable.
  • run command added to run binary executable, till further intgration

What's new in version 1.2.7

  • for compatibility use Unix values for O_RDONLY, O_WRONLY, etc, and translate them automatically to LFS mode values.
  • char type now defaults to signed, use -u option for unsigned chars

What's new in version 1.2.6

  • fix bug loading small negative constants.
  • support octal and hexadecimal character representations in strings and char constants
  • revert banner update and add size detect command

What's new in version 1.2.5

  • internal cleanup of branching logic
  • fix c-style multi line comment crash
  • check for line buffer and symbol table overflow
  • source file no longer needs to be memory resident for compilation.
  • fix bad branch at bootom of long for loops

What's new in version 1.2.4

  • fix parameter mismatch crash
  • check for AST overflow
  • increase AST to 32K
  • remove a few redundant instructions

What's new in version 1.2.3

  • rudimentary peep-hole optimization
  • display correct line in error message
  • fix boolean expression shortcut

What's new in version 1.2.2

  • consisent use of long branch to avoid "too far" errors
  • predefine PICO_ERROR_TIMEOUT
  • detect undefined struct and union

What's new in version 1.2.1

  • remove compiler branch distance restriction

What's new in version 1.2.0

  • C compiler now generates native arm code
  • virtual machine removed

What's new in version 1.1.17

  • fix interaction between tab completion and the command history
  • make sure to truncate when replacing a file
  • wumpus example

What's new in version 1.1.16

  • fix broken keyboard BREAK option

What's new in version 1.1.15

  • fix handling of . and .. notation for directory names
  • allow for(;;) synctax. Passes test 00034.c

What's new in version 1.1.14

  • fix USB buffer overflow pasting in Vi
  • Remove ESC as BREAK key
  • Add getting started section

What's new in version 1.1.13

  • fix tar handling of linux tar peculiarities
  • revert update that broke test cae 00033
  • add 200+ test cases
  • remove xget file size limit
  • cosistent use of CTL-C or ESC for user break

What's new in version 1.1.12

  • fix compiler fail when break statement is used in while loop.

What's new in version 1.1.11

  • compiler checks for code segment overflow
  • compiler checks for data segment overflow

What's new in version 1.1.10

  • forward function declaration support
  • delete io.* and update all code to use standard (stdio) functions
  • minor dgreadln optimization/cleanup
  • compiler readability/maintainability improvements

What's new in version 1.1.9

  • moved all source files to their own directory
  • Added Unix compatible tar command
  • Added recursive rmdir command

What's new in version 1.1.8

  • mostly readability reorganization of compiler source
  • added missing fmodf function since it's recommended by the compiler
  • fixed missed opportunity optimizing modulus operator. (port introduced bug)
  • updated functions list
  • added lorenz simulation example

What's new in version 1.1.7

  • constant expressions for global declarations

What's new in version 1.1.6

  • command history and recall added to the shell

What's new in version 1.1.5

  • formalized three cmake build options
-DUSB_CONSOLE=[ON|OFF]      Build for USB, otherwise UART
-DWITH_IRQ=[ON|OFF]         Build with interrup handling support
-DWITH_KBD_HALT=[ON|OFF]    Build with run-time kbd CTL-C checks

Turning off IRQ support and keyboard halt checking can significantly improve performance,

What's new in version 1.1.4

  • add strncpy, strncmp, strncat, strrchr, asinf, acosf, atanf, atan2f, sinhf, coshf, tanhf, asinhf, acoshf, atanhf and log10f functions
  • append .c to compiler filename if not specified
  • add interrupt driven LED fade example
  • a few minor instruction optimizations

What's new in version 1.1.3

  • fixed compiler bug triggered by mid block declarations
  • added exit function
  • added popcount function
  • added strchr function

What's new in version 1.1.2

  • added Conway's game of life
  • polished a few knobs.
  • hopefully fixed the last of the old compiler induced syntax errors?

What's new in version 1.1.1

  • fix USB startup failures
  • fix compile errors with older version of GCC

What's new in version 1.1.0

  • Xmodem code consolidated.
  • Interrupt handling.
  • Removed stdinit-lib submodule dependency
  • compiler support for taking address of function (needed for interrupt support)
  • file IO to file system
  • Added compiler help

What's new in version 1.0.8

  • proper handling of system calls with variable number of arguments. (remove printf hack)
  • argument type and number checking for all system calls.
  • removed stdlib-init submodule dependency.
  • consolidated xmodem code.
  • implemented move and copy to directory

What's new in version 1.0.7

  • SDK ADC function support
  • SDK SPI function support
  • SDK I2C function support
  • Predefined SDK constants for SDK function parameters
  • Vi uses secondary screen buffer such that prior screen restored on exit
  • Fix build errors under SDK 1.3.x
  • fix editor bug when more than one file name used in a command.

What's new in version 1.0.6

  • file io functions open close read write lseek rename remove

What's new in version 1.0.5

  • use float functions sqrtf sinf cosf tanf logf powf instead of double versions
  • new string function strdup
  • added string example
  • improve compiler error diadnostics
  • added flash boot to usb loader command
  • improved vi keyboard handling

What's new in version 1.0.4

  • function calls to Pico SDK gpio_* and pwm_* functions added
  • C code examples
  • sprintf and atoi function support
  • string functions strcmp, strcpy, strcat, strlen, memcmp
  • reboot command
  • reboot on crash