David Fenyes 93349ed6e9 Add support for "hi-z when low" outputs ... The apple 1 CLEAR input requires a high-impedance inactive state to avoid conflict with the pin output of the 7404 at D12 (via CR4). So, to cover this condition most generally, this patch changes the adds a Hi-Z when low physical device for each output line, to complement the Hi-Z-when-high open collector emulation. The nomenclature is changed from OUT*_OC (emulated open collector) to OUT*_OPEN_HI and OUT*_OPEN_LO to indicate which condition gets the Hi-Z state. - added the set() functions to the asdf_arch_atmega328p.[ch] files and applied the above nomenclature. - Added the set() functions to the asdf_physical.[ch] files and applied the above nomenclature - Modified the SCREEN_CLEAR device to PHYSICAL_OUT1_OPEN_LO in the apple2 and ascii keymaps. - Changed the RESET from PHYSICAL_OUT1_OC to PHYSICAL_OUT1_OPEN_HI in the apple2 and ascii keymaps.		2020-03-16 12:56:21 -05:00
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asdf	Add support for "hi-z when low" outputs	2020-03-16 12:56:21 -05:00