| Line 20... |
Line 20... |
add warning for unreachable code following .jump or .return instructions
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add warning for unreachable code following .jump or .return instructions
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add "share memory" feature?
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add "share memory" feature?
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for dual-port memories in slave peripherals (i.e., registers readable by the bus master)
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for dual-port memories in slave peripherals (i.e., registers readable by the bus master)
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for peripherals such as adders where long chains of outputs and inports would have been required and .store+/- and .fetch+/- would be much more efficient code-wise
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for peripherals such as adders where long chains of outputs and inports would have been required and .store+/- and .fetch+/- would be much more efficient code-wise
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how to accommodate multiple "shared memory" peripherals?
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how to accommodate multiple "shared memory" peripherals?
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finish interrupt handling, add monitor-interrupt peripheral to ensure correct re-enable from the interrupt handler
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remove dead parameters and dead code
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remove dead parameters and dead code
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rework design as required to make it more robust
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rework design as required to make it more robust
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documentation
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documentation
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top-level overview, point to implemented cores
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top-level overview, point to implemented cores
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required: ARCHITECTURE and sizes, ASSEMBLY, and HDL
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required: ARCHITECTURE and sizes, ASSEMBLY, and HDL
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| Line 43... |
Line 42... |
directives
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directives
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instructions
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instructions
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change "opcodes.html" to "instructions.html", ...
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change "opcodes.html" to "instructions.html", ...
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parameters
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parameters
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constants
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constants
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interrupts
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peripherals
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peripherals
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running the test benches
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running the test benches
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core.v
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core.v
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additional instructions?
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additional instructions?
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"invert" opcode in 6'b000100 group
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"invert" opcode in 6'b000100 group
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| Line 60... |
Line 58... |
implement .abbr directive
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implement .abbr directive
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add .if(...) [.elif(...)]* [.else] .endif directive set
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add .if(...) [.elif(...)]* [.else] .endif directive set
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avoid full parsing of false branches (accommodate other cores?)
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avoid full parsing of false branches (accommodate other cores?)
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add symbol for current core -- is9x8 (?)
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add symbol for current core -- is9x8 (?)
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peripherals
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peripherals
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INTERRUPT
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interrupt enable/disable (through INTERRUPT command)
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multi-byte adder
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multi-byte adder
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multiplier
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multiplier
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PICK -- emulate the Forth operator?
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PICK -- emulate the Forth operator?
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this can be done if the data stack is in its own dual-port memory, but that kinds of defeats the purpose of a small micro controller
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this can be done if the data stack is in its own dual-port memory, but that kinds of defeats the purpose of a small micro controller
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bus slave peripherals -- store external commands in a FIFO and statuses in dual-port RAM or shared RAM for external reads
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bus slave peripherals -- store external commands in a FIFO and statuses in dual-port RAM or shared RAM for external reads
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