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Updates and bug fixes. DASM fix still outstanding

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This commit is contained in:
Philip Smart
2026-01-07 09:17:16 +00:00
parent a0bcabb125
commit 517ee7cf88
29 changed files with 1838 additions and 1111 deletions
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77
asm/rfs.asm
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@@ -11,20 +11,22 @@
;- Copyright: (c) 2018-2023 Philip Smart <philip.smart@net2net.org>
;-
;- History: v1.0 July 2019 - Merged 2 utilities to create this compilation.
; v2.0 May 2020 - Bank switch changes with release of v2 pcb with coded latch. The coded
; latch adds additional instruction overhead as the control latches share
; the same address space as the Flash RAMS thus the extra hardware to
; only enable the control registers if a fixed number of reads is made
; into the upper 8 bytes which normally wouldnt occur. Caveat - ensure
; that no loop instruction is ever placed into EFF8H - EFFFH.
; v2.0 July 2020 - Updated for the v2.1 hardware. RFS can run with a tranZPUter board with
; or without the K64 I/O processor. RFS wont use the K64 processor all
; operations are done by the Z80 under RFS.
;- v2.0 May 2020 - Bank switch changes with release of v2 pcb with coded latch. The coded
;- latch adds additional instruction overhead as the control latches share
;- the same address space as the Flash RAMS thus the extra hardware to
;- only enable the control registers if a fixed number of reads is made
;- into the upper 8 bytes which normally wouldnt occur. Caveat - ensure
;- that no loop instruction is ever placed into EFF8H - EFFFH.
;- v2.0 July 2020 - Updated for the v2.1 hardware. RFS can run with a tranZPUter board with
;- or without the K64 I/O processor. RFS wont use the K64 processor all
;- operations are done by the Z80 under RFS.
;- v2.1 April 2021- Updates for the v2.1 RFS board.
;- v2.2 June 2023 - Updates for the Kuma 40/80 upgrade and FusionX.
;- v2.3 Aug 2023 - Updates to make RFS run under the SFD700 Floppy Disk Interface board.
;- UROM remains the same, a 2K paged ROM, MROM is located at F000 when
;- RFS is built for the SFD700.
;- v2.31 Dec 2025 - Bug fixes. Disabled internal floppy control logic for SFD700 as it is not
;- needed, AFI ROM always needs to be present, especially for MZ-80A.
;-
;--------------------------------------------------------------------------------------------------------
;- This source file is free software: you can redistribute it and-or modify
@@ -49,7 +51,7 @@
ALIGN 0E300H
ENDIF
; Monitor command table. This table contains the list of recognised commands along with the
; Monitor command table (SFD700). This table contains the list of recognised commands along with the
; handler function and bank in which it is located.
;
; 7 6 5:3 2:0
@@ -80,10 +82,7 @@ CMDTABLE2: IF BUILD_SFD700 = 1
DB 'D' ; Dump Memory.
DW DUMPX
DB 000H | 000H | 008H | 001H
DB 'F' ; RFS Floppy boot code.
DW FLOPPY
DB 000H | 000H | 008H | 001H
DB 0AAH ; Original Floppy boot code.
DB 'F' ; 'F' RFS Floppy boot code.
DW FDCK
DB 000H | 000H | 030H | 001H
DB 'H' ; Help screen.
@@ -388,7 +387,7 @@ CMDCMP: XOR A ; Clear
LD HL,CMDTABLE
ENDIF
IF BUILD_SFD700 = 1
LD HL,CMDTABLE2
LD HL,CMDTABLE2 ; SFD700 Command table located in lower location.
ENDIF
CMDCMP0: LD DE,BUFER+1 ; First command byte after the * prompt.
LD A,(HL)
@@ -419,9 +418,9 @@ CMDCMP3: LD A,(HL) ; Comma
INC HL
LD H,(HL)
LD L,A
PUSH HL
PUSH HL ; Push the address of the function to be called.
LD (TMPADR),DE ; Store the key buffer location where arguments start.
LD A,C
LD A,C ; Get back command properties, ie. bank number
SRL A
SRL A
SRL A
@@ -433,7 +432,7 @@ CMDCMP3: LD A,(HL) ; Comma
LD DE,BKSW0to1 - BKSW0to0 ; DE is the number of bytes between bank switch calls.
OR A
JR Z,CMDCMP5
CMDCMP4: ADD HL,DE
CMDCMP4: ADD HL,DE ; Basically adding the bank size to the address to get ROM location.
DJNZ CMDCMP4
CMDCMP5: EX DE,HL ; Address of bank switch function into DE.
POP HL ; Get address of command into HL.
@@ -441,7 +440,7 @@ CMDCMP5: EX DE,HL ; Addre
PUSH BC ; Address to return to after command is executed.
PUSH DE ; Now jump to DE which will switch to the correct bank and execute function at HL.
LD DE,(TMPADR)
RET
RET ; Return to address in DE, which is the required bank.
CMDCMP6: LD DE,CMDCMPEND ; Put return address onto stack.
PUSH DE
LD DE,(TMPADR) ; For the current bank, just jump to the function.
@@ -461,7 +460,7 @@ CMDCMPEND: LD A,(RESULT)
LD HL,(EXADR)
JP (HL)
; Monitor command table. This table contains the list of recognised commands along with the
; Monitor command table (ROMDISK). This table contains the list of recognised commands along with the
; handler function and bank in which it is located.
;
; 7 6 5:3 2:0
@@ -501,10 +500,10 @@ CMDTABLE: IF BUILD_ROMDISK = 1
DB "EC" ; Erase file.
DW ERASESD
DB 000H | 000H | 008H | 001H
DB 'F' ; RFS Floppy boot code.
DB 'F' ; 'F' RFS Floppy boot code.
DW FLOPPY
DB 000H | 000H | 008H | 001H
DB 0AAH ; Original Floppy boot code.
DB 0AAH ; 'f' Original Floppy boot code.
DW FDCK
DB 000H | 000H | 030H | 001H
DB 'H' ; Help screen.
@@ -617,7 +616,7 @@ HIROM: IF BUILD_ROMDISK = 1
LD A, (MEMSW) ; Swap ROM into high range slot.
LD A, ROMBANK2
LD (ROMBK1),A ; Save bank being enabled.
HWSELMROM ; Switch to the hiload rom in bank 2.
HWSELMROM ; Switch to the hiload rom in bank 2.
JP 0C000H
ENDIF
@@ -874,7 +873,6 @@ PRTMZF4: OR A
POP BC
RET
; Method to list the directory of the ROM devices.
;
DIRROM: ;DI ; Disable interrupts as we are switching out the main rom.
@@ -903,7 +901,7 @@ DIRROM: ;DI ; Disab
; B = Bank Page
; C = Block in page
;
LD B,MROMPAGES ; First 8 pages are reserved in MROM bank.
LD B,MROMPAGES ; First set of pages are reserved in MROM bank.
LD C,0 ; Block in page.
;
DIRNXTPG: LD A,B
@@ -970,7 +968,7 @@ FINDMZF: PUSH DE
; C = Block in page
;
FINDMZF0: POP DE ; Get file sequence number in D.
LD B,MROMPAGES ; First 4 pages are reserved in User ROM bank.
LD B,MROMPAGES ; First set of pages are reserved in User ROM bank.
LD C,0 ; Block in page.
FINDMZF1: LD A,B
LD (WRKROMBK1), A
@@ -1051,17 +1049,18 @@ LOADROM1: ;DI
PUSH HL ; Preserve execute flag.
EX DE,HL ; User ROM expects HL to have the filename pointer.
PUSH HL ; Save pointer to filename for FINDMZF in Monitor ROM.
; D = File sequence number.
LD D,0 ; File numbering start.
;
LD A,ROMBANK3 ; Activate the RFS Utilities MROM bank.
LD (WRKROMBK1), A
HWSELMROM
CALL MFINDMZF ; Try and find the file in User ROM via MROM utility.
POP HL
JR Z,MROMLOAD0
IF BUILD_ROMDISK = 1
PUSH HL ; Save pointer to filename for FINDMZF in Monitor ROM.
LD A,ROMBANK3 ; Activate the RFS Utilities MROM bank.
LD (WRKROMBK1), A
HWSELMROM
CALL MFINDMZF ; Try and find the file in User ROM via MROM utility.
POP HL
JR Z,MROMLOAD0
ENDIF
;
CALL FINDMZF ; Find the bank and block where the file resides. HL = filename.
JR Z, LROMLOAD
@@ -1098,7 +1097,7 @@ LOADROMEND:;EI
;
LROMLOAD: PUSH BC
;
PUSH BC
PUSH BC ; Print Loading <file>
LD DE,MSGLOAD+1
LD BC,NAME
LD HL,PRINTMSG
@@ -1110,7 +1109,7 @@ LROMLOAD: PUSH BC
HWSELMROM
;
LD DE, IBUFE ; Copy the header into the work area.
LD HL, 00000h ; Add block offset to get the valid block.
LD HL, MROMSTART ; Add block offset to get the valid block.
LD A,C
IF RFSSECTSZ >= 512
RLCA
@@ -1141,7 +1140,7 @@ LROMLOAD2: LD A, B
HWSELMROM
LROMLOAD3: PUSH BC
LD HL, 00000h
LD HL, MROMSTART
LD A, C
IF RFSSECTSZ >= 512
RLCA
@@ -1483,6 +1482,10 @@ DEFAULTFNE: EQU $
ORG 0EFF8h
DB 0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0FFh,0AAh
IF BUILD_SFD700 = 1
ALIGN 0F000H
ENDIF
MEND:
;