--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/pfc/bigmem.cpp	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,59 @@
+#include "pfc-lite.h"
+#include "bigmem.h"
+
+namespace pfc {
+	void bigmem::resize(size_t newSize) {
+		clear();
+		m_data.set_size((newSize + slice - 1) / slice);
+		m_data.fill_null();
+		for (size_t walk = 0; walk < m_data.get_size(); ++walk) {
+			size_t thisSlice = slice;
+			if (walk + 1 == m_data.get_size()) {
+				size_t cut = newSize % slice;
+				if (cut) thisSlice = cut;
+			}
+			void* ptr = malloc(thisSlice);
+			if (ptr == NULL) { clear(); throw std::bad_alloc(); }
+			m_data[walk] = (uint8_t*)ptr;
+		}
+		m_size = newSize;
+	}
+	void bigmem::clear() {
+		for (size_t walk = 0; walk < m_data.get_size(); ++walk) free(m_data[walk]);
+		m_data.set_size(0);
+		m_size = 0;
+	}
+	void bigmem::read(void* ptrOut, size_t bytes, size_t offset) const {
+		PFC_ASSERT(offset + bytes <= size());
+		uint8_t* outWalk = (uint8_t*)ptrOut;
+		while (bytes > 0) {
+			size_t o1 = offset / slice, o2 = offset % slice;
+			size_t delta = slice - o2; if (delta > bytes) delta = bytes;
+			memcpy(outWalk, m_data[o1] + o2, delta);
+			offset += delta;
+			bytes -= delta;
+			outWalk += delta;
+		}
+	}
+	void bigmem::write(const void* ptrIn, size_t bytes, size_t offset) {
+		PFC_ASSERT(offset + bytes <= size());
+		const uint8_t* inWalk = (const uint8_t*)ptrIn;
+		while (bytes > 0) {
+			size_t o1 = offset / slice, o2 = offset % slice;
+			size_t delta = slice - o2; if (delta > bytes) delta = bytes;
+			memcpy(m_data[o1] + o2, inWalk, delta);
+			offset += delta;
+			bytes -= delta;
+			inWalk += delta;
+		}
+	}
+	uint8_t* bigmem::_slicePtr(size_t which) { return m_data[which]; }
+	size_t bigmem::_sliceCount() { return m_data.get_size(); }
+	size_t bigmem::_sliceSize(size_t which) {
+		if (which + 1 == _sliceCount()) {
+			size_t s = m_size % slice;
+			if (s) return s;
+		}
+		return slice;
+	}
+}
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