Monochrome Graphics (250-3049A) Pinouts Faxback Doc. # 2123 Parallel Adapter 1 - Strobe 2 - Data Bit 0 3 - Data Bit 1 4 - Data Bit 2 5 - Data Bit 3 6 - Data Bit 4 7 - Data Bit 5 8 - Data Bit 6 9 - Data Bit 7 10 - Acknowledge 11 - Busy 12 - Paper Feed 13 - Select 14 - Auto Feed 15 - Error 16 - Initialize 17 - Select-In 18-25 - Ground