b82cf51aea
IO blocks have registers: for input, for output and for OutputEnable signal - IREG, OREG and TREG respectively. Each of the registers has one implicit non-switched wire, which one depends on the type of register (IREG has a Q wire, OREG has a D wire). Although the registers can be activated independently of each other they share the CLK, ClockEnable and LocalSetReset wires and this places restrictions on the possible combinations of register types in a single IO. Register placement in IO blocks is enabled by specifying the command line keys --vopt ireg_in_iob, --vopt oreg_in_iob, or --vopt ioreg_in_iob. It should be noted that specifying these keys leads to attempts to place registers in IO blocks, but no errors are generated in case of failure. Signed-off-by: YRabbit <rabbit@yrabbit.cyou> |
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| .. | ||
| himbaechel_dbgen | ||
| uarch | ||
| .gitignore | ||
| arch_pybindings.cc | ||
| arch_pybindings.h | ||
| arch.cc | ||
| arch.h | ||
| archdefs.h | ||
| chipdb.h | ||
| family.cmake | ||
| himbaechel_api.cc | ||
| himbaechel_api.h | ||
| himbaechel_constids.h | ||
| himbaechel_gfxids.h | ||
| himbaechel_helpers.cc | ||
| himbaechel_helpers.h | ||
| main.cc | ||