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DEVICE ZXSPECTRUM128 : LABELSLIST "po_mmu.lbl" ; to check label pages
MMU 1 3, 5 ; maps slots 1, 2, 3 with pages 5, 6, 7
ORG 0xBFFF
label1_p6: scf ; last byte of page 6 (in slot 2)
label2_p7: scf ; first byte of page 7 (in slot 3)
MMU 3 e, 0 ; page 0 into slot 3, write beyond slot will cause error
ORG 0xFFFF
ld a,1 ; error: Write outside of memory slot: 65536 (65536 = address outside)
MMU 3 n, 1 ; page 1 into slot 3, make it wrap + map next page automatically
ORG 0xFFFF ; ! also the $ address was truncated by MMU from $10001 to $0001 !
label3_p1: scf ; last byte of page 1, then wrapping back to 0xC000 with page 2
label4_p2: scf ; first byte of page 2 at 0xC000