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| Chip Position & Chip-Type |
| D2 | Floppy Disk Controller WD2793 |
| D7 | ICB 82188 |
| D8 | FPU 8087 |
| D29 | Siemens SM912 (SCSI-Controller) |
| D34 | CPU 80186 |
| D42 | Urlader Lo |
| D43 | Urlader Hi |
| D50 | DRAM Controller 8208 |
| D73, D77 | Interrupt-Controller 8259A |
| D141, D142 | Interrupt-Controller I8259A |
| D74 | Enhanced programmable communicationsinterface SCN2661B Tastatur unter MS-DOS |
| D75 | Enhanced programmable communicationsinterface SCN2661B (Reserve) |
| D76 | Enhanced programmable communicationsinterface SCN2661B (Drucker) |
| D79 | NV-RAM MK48Z02 (Optional) |
| D97 | RTC MC146818 |
| D100-D108 | Speicherbank 0 Lo |
| D109-D117 | Speicherbank 0 Hi |
| D118-D126 | Speicherbank 1 Lo |
| D127-D135 | Speicherbank 1 Hi |
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