I had saved different version of gnumach and I noticed that my Celleron II 512MB starts with 2024.12.24 and 2024.11.27 (I have no earlier).
2024.04.10 and next: it doesn't work. I see o my screen: GNU Mach 1.8+git202304.10-486 biosmem: physical memory map: (...) vm_page: page table size: 120784 entries (7156k) vm_page: DMA: pages: 4080 (15M), free: 0 (0M) vm_page: DMA: min:500 low:600 high:1000 vm_page: DIRECTMAP: pages: 126704 (494M), free: 123436 (492M) vm_page: DIRECTMAP: min:6335 low:7602 high:126770