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[/] [amber/] [trunk/] [hw/] [vlog/] [amber23/] [a23_decode.v] - Rev 88

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Rev Log message Author Age Path
88 Added the carry in fix added recently to the a23 core to a25 core. csantifort 3388d 21h /amber/trunk/hw/vlog/amber23/a23_decode.v
87 Added support for "When an Operand2 constant is used with the instructions MOVS, MVNS, ANDS, ORRS, ORNS, EORS, BICS, TEQ or TST, the carry flag is updated to bit[31] of the constant, if the constant is greater than 255 and can be produced by shifting an 8-bit value" to amber23 csantifort 3389d 01h /amber/trunk/hw/vlog/amber23/a23_decode.v
83 Fixed bug with carry bit - now only use the carry bit as an input to specific instruments that use it - add with carry and subtract with carry csantifort 3402d 05h /amber/trunk/hw/vlog/amber23/a23_decode.v
82 Fixed overflag bug, ldmia user regs bug and status_bits_mode set on non-ececuting command bug csantifort 3415d 16h /amber/trunk/hw/vlog/amber23/a23_decode.v
71 Original Amber 23 core uses asyncronous implementation of register bank.
It leads to some problems with ram-based implementation of the register bank,
because at least Altera FPGAs uses syncronous ram blocks, so the whole address
needs to be latched.

The patch exposes non-registered versions of register select signals to the
register bank, so the bank can build address and latch it in the syncronous
ram input register.

The patch is a pre-requisite for ram-based register bank implementation on Altera FPGA.

Contributed by Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
csantifort 4101d 23h /amber/trunk/hw/vlog/amber23/a23_decode.v
63 Add support for Xilinx ISim Verilog simulator.
Remove Virtex-6 files.
csantifort 4102d 05h /amber/trunk/hw/vlog/amber23/a23_decode.v
15 Copied amber to amber23, Many system changes to support new amber25 core. csantifort 4901d 13h /amber/trunk/hw/vlog/amber23/a23_decode.v
2 Baseline release of the Amber 2 core csantifort 4931d 23h /amber/trunk/hw/vlog/amber/a23_decode.v

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