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114 lines
4.2 KiB
Plaintext
114 lines
4.2 KiB
Plaintext
Next Release
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- When using the monitor, the nonblocking character input at
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$F004 should now work on the Microsoft Windows platform.
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- Fixed that relative branch calculations would not use the correct
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start address when assembling in the monitor. Closes #10.
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- The processor status register ("p" or "flags") can now be changed
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in the monitor using the "registers" command with an argument of
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"p", such as "registers p=00".
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- MPU objects now return a two-line string as their __repr__ with
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the processor status register displayed as binary for readability.
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- The processor status register is now initialized to 0 on reset.
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Previously, its unused bit (bit 5) was set to 1 on reset.
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- Applied patch from Ed Spittles to change the CMP algorithm so that
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it no longer fails Rob Finch's test suite. Closes #8.
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- Added a new interactive assembly mode to the monitor. Entering the
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the assemble command with a statement such as "a c000 lda #0" works
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as before. Entering "a c000" will start the interactive assembler
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at that address. Entering "a" alone will start it at the current
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program counter.
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- Applied patch from Ed Spittles so that SBC now properly sets the
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Overflow (V) flag. This fixes a failure in Rob Finch's test suite.
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Closes #6.
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0.6 (2009-08-11)
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- Added monitor shortcut "a" for "assemble".
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- Fixed that ASL would not properly set the Z flag. Closes #7.
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- Fixed that ADC would not properly set the Overflow (V) flag. The
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overflow calculation that is now used originated from XGS: Apple
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IIGS Emulator (cputable.h). Originally written and Copyright
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(C)1996 by Joshua M. Thompson. Copyright (C) 2006 by Samuel A.
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Falvo II. http://bitbucket.org/kc5tja/lib65816/src/tip/src/cputable.h
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Closes #3.
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0.5 (2009-08-06)
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- Fixed signatures of getc/putc callbacks in monitor that were broken
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when the ObservableMemory interface changed in 0.3. Closes #1.
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- Fixed that ROL would not properly set the Z flag. Closes #2.
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0.4 (2009-06-06)
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- Added ez_setup.py to bootstrap setuptools installation.
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0.3 (2009-06-03)
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- Added shortcuts for monitor commands such as "m" for "memory". These
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are mostly the same as the VICE monitor shortcuts.
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- The terminal width can now be changed in the monitor using the new
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"width" command. Some commands, like "mem", will wrap to this width.
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- Fixed a bug where BRK would increment PC by 3 instead of 2. Thanks
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to Oscar Lindberg.
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- Added a new 65C02 MPU simulation started by Oscar Lindberg. It is
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now mostly complete.
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- Added a new "mpu" command to the monitor. It will switch between the
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NMOS 6502 and CMOS 65C02 simulations.
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- A new "devices" module has been added to organize device simulations.
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- The mpu6502 and mpu65c02 devices have been reorganized internally to
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use Python decorators to build their lookup tables based on an
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idea by Oscar Lindberg.
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- A new "utils" module has been added with various utility functions.
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- The ObservableMemory interface has been changed for clarity.
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- Python 2.4 or later is now required.
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0.2 (2008-11-09)
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- Added a new "disassemble" command to the monitor. It can disassemble
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any range of memory ("disassemble c000:c010"). If labels have been
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defined, the disassembly will show them in the operands.
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- Added a new "assemble" command to the monitor. It can assemble a
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single instruction at an address ("assemble c000 jsr $ffd2").
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Labels in the operands are also supported ("assemble c000 jsr charout").
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- Moved the character I/O area from $E000 to $F000 for compatibility with
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the EhBASIC binary saved from Michal Kowalski's Windows-based simulator.
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In a future version of Py65, the I/O area will be configurable.
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- When running a program in the monitor, a read to $F004 will now do a
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non-blocking read from STDIN. If no character is available, a null
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byte ($00) will be returned.
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- Fixed a bug where a CMP instruction could crash the simulator due to
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an undefined variable.
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- EhBASIC 2.09 now runs in the simulator!
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- Documented all remaining monitor commands. In the monitor, use the
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command "help command" for help on any command.
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0.1 (2008-11-21)
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- First release.
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