Currently supported Signetics devices:

27C010, 27C010 [PLCC32], 27C040, 27C210, 27C210 [PLCC44], 27C240, 27C240 [PLCC44], 27C256, 27C256 [PLCC32], 27C512, 27C64, 27C641, 27C64A, 27HC128, 27HC641, 8048, 8049, 82S100, 82S101, 87C652, 87C652 [PLCC44], 87C652 [PQFP44], 87C654, 87C654 [PLCC44], 87C654 [PQFP44], ECG2532, N2708, PL22V10, PL22V10 [PLCC28], PLS100, PLS100 [PLCC28], PLS101, PLS101 [PLCC28], PLS153, PLS153 [PLCC20], PLS153A, PLS153A [PLCC20], S87C51FA, S87C51FA [PLCC44], S87C51FA [PQFP44], S87C51FB, S87C51FB [PLCC44], S87C51FB [PQFP44], S87C51FC, S87C51FC [PLCC44], S87C51FC [PQFP44], S87C652, S87C652 [PLCC44], S87C652 [PQFP44], S87C654, S87C654 [PLCC44], S87C654 [PQFP44], S87C751, S87C751 [PLCC28], S87C751 [SSOP24], SC87C51, SC87C51 [PLCC44], SC87C51 [PQFP44]