diff --git a/openfpga/src/fabric/build_top_module_memory.cpp b/openfpga/src/fabric/build_top_module_memory.cpp index 302bd6675..47238685e 100644 --- a/openfpga/src/fabric/build_top_module_memory.cpp +++ b/openfpga/src/fabric/build_top_module_memory.cpp @@ -370,12 +370,13 @@ void build_top_module_configurable_regions( * Note: the organization of inter-tile aims to reduce the wire length * to connect between tiles. Therefore, it is organized as a snake * where we can avoid long wires between rows and columns + * Note: Corner I/Os only occur when perimeter cb is allowed * * +--------------------------------------------------------+ - * | +------+------+-----+------+ | - * | | I/O | I/O | ... | I/O | | - * | | TOP | TOP | | TOP | | - * | +------+------+-----+------+ | + * | +------+ +------+------+-----+------+ +------+ | + * | | I/O | | I/O | I/O | ... | I/O | | I/O | | + * | | LEFT | | TOP | TOP | | TOP | | TOP | | + * | +------+ +------+------+-----+------+ +------+ | * | +---------------------------------->tail | * | +------+ | +------+------+-----+------+ +------+ | * | | | | | | | | | | | | @@ -397,10 +398,10 @@ void build_top_module_configurable_regions( * | | LEFT | | [0] | [1] | | [i] | | |RIGHT | | * | +------+ +------+------+-----+------+ | +------+ | * +-------------------------------------------+ | - * +------+------+-----+------+ | - * | I/O | I/O | ... | I/O | | - * |BOTTOM|BOTTOM| |BOTTOM| | - * +------+------+-----+------+ | + * +------+ +------+------+-----+------+ +------+ | + * | I/O | | I/O | I/O | ... | I/O | | I/O | | + * |BOTTOM| |BOTTOM|BOTTOM| |BOTTOM| |RIGHT | | + * +------+ +------+------+-----+------+ +------+ | * head >-----------------------------------------------+ * * Inner tile connection: @@ -486,7 +487,6 @@ void organize_top_module_memory_modules( for (size_t ix = grids.width() - 1; ix >= 1; --ix) { io_coords[TOP].push_back(vtr::Point(ix, grids.height() - 1)); } - io_coords[TOP].push_back(vtr::Point(0, grids.height() - 1)); /* LEFT side I/Os */ for (size_t iy = grids.height() - 1; iy >= 1; --iy) {