progress on FAT16 support

2024-01-12 13:29:20 +01:00
parent ee2f22df09
commit 507eb3a017
40 changed files with 19699 additions and 6346 deletions
--- a/OperatingSystem/monitor_v2/include/cmd_disk.s
+++ b/OperatingSystem/monitor_v2/include/cmd_disk.s
@@ -0,0 +1,26 @@
+OP_LSDSK:
+    call ideif_prnt_devtable
+    ret
+
+OP_SELDSK:
+    ;DE contains pointer
+    push de
+    pop hl
+    ld a,(hl)
+    sbc 69
+    jr c,_OP_SELDSK_INVALID
+    cp 4
+    jr nc, _OP_SELDSK_INVALID
+    call 0x8000
+    ret
+
+_OP_SELDSK_INVALID:
+    ld hl,[_OP_SELDSK_INVALID_STR]
+    call print_str
+    LD DE,0x20
+    LD BC,0x70
+    CALL beep
+    ret
+
+_OP_SELDSK_INVALID_STR:
+    db 10,13,"Invalid drive letter",10,13,0