Comments (2)
A few ideas:
BYE
or a different forth word could turn off the interpreter (see also src/e/processor.c,do_hostif
)- Running the forth interpreter with UART input/output may also be useful on hardware, and I think the same firmware should run on hardware and in e.
- The "stdio" device could be selected through a GPIO pin that's read when Forth starts. This pin could can simulated in e (obviously), and hooked up to a jumper header or DIP switch on hardware. This is a simple configuration mechanism, but won't scale to many bits of configuration.
- The
LEDS
line interferes with the UART, at least when stdout and stderr are connected to the same terminal.
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No longer relevant; new computer specification is already headless (uses serial port for communication with outside world), so 'e' no longer represents a real machine.
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Related Issues (20)
- Problem: BIOS still lacks a way to read plain ASCII input from the keyboard.
- Problem: e emulator incorrectly vectored interrupts.
- Problem: e emulator doesn't support interrupts.
- Problem: BIOS doesn't track shift status.
- Problem: BSPL ABI is inconsistent.
- Problem: Symbolification of BSPL breaks Milestone 2.
- Problem: Assembler desperately needs local symbol support. HOT 1
- CSRR{W,S,C} Xn, Xn, anyCSR overwrites input Xn value with output Xn value before actually computing new CSR value.
- Problem: e emulator needs to provide an SDB ROM image for final firmware binary creation. HOT 1
- Problem: Oberon compiler fails assertion when WHILE TRUE DO is compiled. HOT 1
- Problem: Oberon Compiler destroys procedure stack image when assigning a string to an ARRAY OF CHAR variable. HOT 1
- Problem: BASE ignored when accepting numbers for input in Kestrel Forth.
- Problem: Line editor word SET does not mark block 100 as modified?
- Problem: LISTing a recently CLEANed block with lines SET comes up blank. HOT 1
- e emulator supports privileged ISA spec 1.7.
- 'a' assembler does not recognize new privilege ISA instructions. HOT 1
- Typo in assembler sources for mideleg register.
- SDRAM is both hard and incompatible from FPGA board to board. Use scratchpad RAM instead. HOT 1
- GPIA pinout needs normalization to better support generic PMOD interfaces. HOT 1
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