draft sources

resident.inc

@@ -0,0 +1,69 @@
+; ===================================================
+; MSX BASIC for Orion-128 computer
+;
+; Resident part of specific Orion-128 code at
+; unswitcheadle RAM region 0xF300-0xF3FF
+; Moved from MZBAS code body at BASIC Init process
+;
+; Disassembled by Romychs @ 2026-10-08
+; ===================================================
+
+; Move bytes to memory page 1
+;  Inp: HL - start address
+;       DE - destination address
+;       B - counter
+ORI_MV_RAM1 EQU 0xf300
+
+; Fill memory page 1 with value
+;  Inp: HL - destination start address
+;       C - value to write
+;       B - count to write
+ORI_FILL_RAM1 EQU 0xf310
+
+; Read byte from memory page 1
+;  Inp: HL - source address
+;  Out: C - result
+ORI_RD_RAM1 EQU 0xf31e
+
+; Fill both base page 0 and page 1 with values (symbol and attribyte)
+;  Inp: HL - dest address
+;       D - value for page 0
+;       C - value for page 1
+;       B - count
+ORI_FILL_BOTH  EQU 0xf326
+
+; Move (HL)->(DE) BC-count for page 0 and page 1
+;  Inp: HL -> source
+;       DE -> destination
+;       BC - count of bytes
+ORI_MV_BOTH  EQU 0xf335
+
+; Duplicate code
+; Move (HL)->(DE) BC-count for page 0 and page 1
+;  Inp: HL -> source
+;       DE -> destination
+;       BC - count of bytes
+ORI_MV_BOTH1 EQU 0xf353
+
+
+; Move 256 byte blocks (HL)->(DE) on both pages 0 and 1
+;  Inp: HL -> source
+;       DE -> destination
+;       B - count of blocks
+ORI_MV_BOTH_PAR  EQU 0xf371
+
+; Duplicate code
+; Move 256 byte blocks (HL)->(DE) on both pages 0 and 1
+;  Inp: HL -> source
+;       DE -> destination
+;       B - count of blocks
+ORI_MV_BOTH_PAR1  EQU 0xf381
+
+; Move 256 bytes (HL)->(DE) on specified page
+;  Inp: A - RAM page no [0..3]
+OPI_MV_SPAGE  EQU 0xf391
+
+; Duplicate code
+; Move 256 bytes (HL)->(DE) on specified page
+;  Inp: A - RAM page no [0..3]
+OPI_MV_SPAGE1  EQU 0xf3a1