https://www.dennishilk.com/de/museum/home-computing-lab/field-notes/field-note-7/ https://www.dennishilk.com/assets/home-computing-lab/field-notes/cisco-9951-cat-card.webp https://www.dennishilk.com/assets/home-computing-lab/field-notes/cisco-9951-cat-card.webp Can a Cisco CP-9951 Run DOOM? Yes — and the Phone Controls It Native, persistent and offline DOOM on a Cisco CP-9951, with local framebuffer rendering, real keypad control and phone audio. https://www.dennishilk.com/assets/home-computing-lab/field-notes/cisco-cp-9951-doom-controller-web.mp4 106 2026-09-13T09:49:08+00:00 yes Dennis Hilk Cisco CP-9951 DOOM Linux https://www.dennishilk.com/museum/home-computing-lab/field-notes/field-note-7/ https://www.dennishilk.com/assets/home-computing-lab/field-notes/cisco-9951-cat-card.webp https://www.dennishilk.com/assets/home-computing-lab/field-notes/cisco-9951-cat-card.webp Can a Cisco CP-9951 Run DOOM? Yes — and the Phone Controls It Native, persistent and offline DOOM on a Cisco CP-9951, with local framebuffer rendering, real keypad control and phone audio. https://www.dennishilk.com/assets/home-computing-lab/field-notes/cisco-cp-9951-doom-controller-web.mp4 106 2026-09-13T09:49:08+00:00 yes Dennis Hilk Cisco CP-9951 DOOM Linux