Labels:text | diagram | parallel | screenshot | line | black and white | receipt OCR: B.36 - Memory Map S M M T F T T a 0 3 S S T T 0 Location(s ) Size Type Meaning 0x00FFA201 BYTE Command Vector Register (DSP X:$FFE9) as followus: Host Command Bit Bit 0 Bit 7 Host Vector (0-31) 0x00FFA202 BYTE Interrupt Status Register (DSP X:$FFE8) as follows: 0x00F FA203 BYTE PO Interrupt Vector Register (This register contains the 880>0 exception vector used for DSP exceptions). 0x00FFA204 BYTE Unused 0x00FFA205 BYTE DSP WORD High (DSP X:$FFEB) 0x00FFA206 BYTE DSP WORD Middle (DSP X:$FFEB) 0x00FFA207 BYTE DSP WORD Low (DSP X:$FFEB) 0x00F FA208 - N/A N/A Undefined OxOOFFF9FF ST Multi - Function Peripheral Port (68901) 0x00FFFA00 OB MFP-ST General Purpose Pins (Parallel port data register on Atari machines) 0x00FFFA02 OB MFP-ST Active Edge Register as follows: Monochcome Monitor Detect RS-232 Ring Indicator POC/HOC Inteccupt Keyboard/MIDI Inteccupt Bit 0 Bit 7 Unused AS-232 Clear To Send AS-232 Cacciec Detect Centronics Busy On a Falcon030, the MFP is not actually used for serial communcations. 0x00F FFA04 OB MFP-ST Data Direction Register. Each bit is individually programmed (0 = input, 1 = output).
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