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Костыльно поправлены RAM_ROUTINES в SP_128 для сохранения статуса прерываний в функции SWAP_ROM
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Tolik
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154
SP_128.ASM
154
SP_128.ASM
@ -2,11 +2,14 @@
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; *** SPECTRUM 128 ROM 0 DISASSEMBLY ***
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; **************************************
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INCLUDE 'Shared_Includes/macroses/macros.z80'
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INCLUDE 'inc/rom_routines.inc'
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DEFINE MODIFIED_SWAP
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TST_PATCH_ADDR EQU #5CC0
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; The Spectrum ROMs are copyright Amstrad, who have kindly given permission
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; to reverse engineer and publish Spectrum ROM disassemblies.
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; =====
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; NOTES
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; =====
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@ -248,12 +251,12 @@
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; These are held in the old ZX Printer buffer at #5B00-#5BFF.
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; Note that some of these names conflict with the system variables used by the ZX Interface 1.
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SWAP_ROM EQU #5B00 ; 20 Swap paging subroutine.
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YOUNGER EQU #5B14 ; 9 Return paging subroutine.
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ONERR EQU #5B1D ; 18 Error handler paging subroutine.
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PIN EQU #5B2F ; 5 RS232 input pre-routine.
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POUT EQU #5B34 ; 22 RS232 token output pre-routine. This can be patched to bypass the control code filter.
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POUT2 EQU #5B4A ; 14 RS232 character output pre-routine.
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;SWAP_ROM EQU #5B00 ; 20 Swap paging subroutine.
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;YOUNGER EQU #5B14 ; 9 Return paging subroutine.
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;ONERR EQU #5B1D ; 18 Error handler paging subroutine.
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;PIN EQU #5B2F ; 5 RS232 input pre-routine.
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;POUT EQU #5B34 ; 22 RS232 token output pre-routine. This can be patched to bypass the control code filter.
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;POUT2 EQU #5B4A ; 14 RS232 character output pre-routine.
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TARGET EQU #5B58 ; 2 Address of subroutine to call in ROM 1.
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RETADDR EQU #5B5A ; 2 Return address in ROM 0.
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BANK_M EQU #5B5C ; 1 Copy of last byte output to I/O port #7FFD.
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@ -922,28 +925,49 @@ NMI_POINT:
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; RET ;
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; ENT
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;SWAP_ROM
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;L006B Paging subroutine
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RAM_ROUTINES:
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L006B: PUSH AF ; Save AF and BC.
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DISP BASIC_FN.x128.ROM_SWAP
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SWAP_ROM:
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IFNDEF MODIFIED_SWAP
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PUSH AF ; Save AF and BC.
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PUSH BC ;
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LD BC,#7FFD ;
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LD A,(BANK_M) ; #5B5C.
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XOR #10 ; Select other ROM.
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LD BC,$7FFD ;
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LD A,(BANK_M) ; $5B5C.
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.PRESENCE: XOR $10 ; Select other ROM.
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DI ; Disable interrupts whilst switching ROMs.
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LD (BANK_M),A ; #5B5C.
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LD (BANK_M),A ; $5B5C.
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OUT (C),A ; Switch to the other ROM.
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EI ;
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POP BC ; Restore BC and AF.
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POP AF ;
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RET ;
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.Size EQU $-L006B
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ELSE
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PUSH AF ; Save AF and BC.
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PUSH BC ;
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LD A,R
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PUSH AF
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LD A,(BANK_M) ; $5B5C.
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.PRESENCE: XOR #10 ; Select other ROM.
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CALL TST_KOSTYL
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POP AF
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JP PO,TST_KOSTYL2.no_EI
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JR TST_KOSTYL2
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;
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RET ; ¢á直© á«ãç ©
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BLOCK #7F-$$$,0
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ENDIF
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; ˆá¯®«ì§ã¥âáï ¢ L3B49 SP__48.ASM
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ASSERT SWAP_ROM.PRESENCE = #5B08, "ERROR: SWAP_ROM.PRESENCE NOT GOOD"
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; ---------------------------
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; Return to Other ROM Routine (copied to #5B14)
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; ---------------------------
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; Switch to the other ROM from that currently paged in
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; and then return to the address held in RETADDR.
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;YOUNGER
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YOUNGER:
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L007F: CALL SWAP_ROM ; #5B00. Toggle to the other ROM.
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PUSH HL ;
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LD HL,(RETADDR) ; #5B5A.
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@ -955,9 +979,10 @@ L007F: CALL SWAP_ROM ; #5B00. Toggle to the other ROM.
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; ---------------------
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; This error handler routine switches back to ROM 0 and then
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; executes the routine pointed to by system variable TARGET.
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;ONERR
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L0088: DI ; Ensure interrupts are disabled whilst paging.
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;L0088:
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ONERR:
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IFNDEF MODIFIED_SWAP
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DI ; Ensure interrupts are disabled whilst paging.
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LD A,(BANK_M) ; #5B5C. Fetch current paging configuration.
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AND #EF ; Select ROM 0.
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LD (BANK_M),A ; #5B5C. Save the new configuration
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@ -965,6 +990,19 @@ L0088: DI ; Ensure interrupts are disabled whilst paging.
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OUT (C),A ; Switch to ROM 0.
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EI ;
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JP L00C3 ; Jump to #00C3 (ROM 0) to continue.
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ELSE
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LD A,(BANK_M) ; $5B5C. Fetch current paging configuration.
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AND $EF ; Select ROM 0.
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CALL TST_KOSTYL
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JR .exit
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TST_KOSTYL2: EI
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.no_EI: POP BC ; Restore BC and AF.
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POP AF ;
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RET
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ONERR.exit: EI ;
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JP L00C3 ; Jump to $00C3 (ROM 0) to continue.
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ENDIF
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; -------------------------
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; 'P' Channel Input Routine (copied to #5B2F)
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@ -973,9 +1011,9 @@ L0088: DI ; Ensure interrupts are disabled whilst paging.
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; It causes ROM 0 to be paged in so that the new RS232 routines
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; can be accessed.
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;PIN
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PIN:
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L009A: LD HL,L06D8 ; RS232 input routine within ROM 0.
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JR L00A2 ;
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JR POUT.L00A2 ;
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; --------------------------
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; 'P' Channel Output Routine (copied to #5B34)
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@ -984,11 +1022,11 @@ L009A: LD HL,L06D8 ; RS232 input routine within ROM 0.
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; It causes ROM 0 to be paged in so that the new RS232 routines
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; can be accessed.
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; Entry: A=Byte to send.
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;POUT
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L009F: LD HL,L07CA ; RS232 output routine within ROM 0.
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L00A2: EX AF,AF' ; Save AF registers.
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;L009F:
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POUT:
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IFNDEF MODIFIED_SWAP
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LD HL,L07CA ; RS232 output routine within ROM 0.
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.L00A2: EX AF,AF' ; Save AF registers.
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LD BC,#7FFD ;
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LD A,(BANK_M) ; #5B5C. Fetch the current paging configuration
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PUSH AF ; and save it.
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@ -997,16 +1035,31 @@ L00A2: EX AF,AF' ; Save AF registers.
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LD (BANK_M),A ; #5B5C. Store the new paging configuration.
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OUT (C),A ; Switch to ROM 0.
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JP L05E6 ; Jump to the RS232 channel input/output handler routine.
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ELSE
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LD HL,L07CA ; RS232 output routine within ROM 0.
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.L00A2: EX AF,AF' ; Save AF registers.
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LD A,(BANK_M) ; #5B5C. Fetch the current paging configuration
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PUSH AF ; and save it.
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AND #EF ; Select ROM 0.
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;
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JR TST_KOSTYL3
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;
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TST_KOSTYL: LD BC,#7FFD ;
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DI ; Ensure interrupts are disabled whilst paging.
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LD (BANK_M),A ; #5B5C. Store the new paging configuration.
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OUT (C),A ; Switch to ROM 0.
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RET
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ENDIF
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; ------------------------
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; 'P' Channel Exit Routine (copied to #5B4A)
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; ------------------------
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; Used when returning from a channel 'P' read or write operation.
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; It causes the original ROM to be paged back in and returns back to
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; the calling routine.
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;POUT2
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L00B5: EX AF,AF' ; Save AF registers. For a read, A holds the byte read and the flags the success status.
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;L00B5:
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POUT2:
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IFNDEF MODIFIED_SWAP
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EX AF,AF' ; Save AF registers. For a read, A holds the byte read and the flags the success status.
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POP AF ; Retrieve original paging configuration.
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LD BC,#7FFD ;
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DI ; Ensure interrupts are disabled whilst paging.
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@ -1015,6 +1068,21 @@ L00B5: EX AF,AF' ; Save AF registers. For a read, A holds the byte read
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EI ;
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EX AF,AF' ; Restore AF registers. For a read, A holds the byte read and the flags the success status.
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RET
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ELSE
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EX AF,AF' ; Save AF registers. For a read, A holds the byte read and the flags the success status.
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POP AF ; Retrieve original paging configuration.
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CALL TST_KOSTYL
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EI ;
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EX AF,AF' ; Restore AF registers. For a read, A holds the byte read and the flags the success status.
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RET
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;
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TST_KOSTYL3:
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LD BC,L05E6
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PUSH BC
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JR TST_KOSTYL
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ENDIF
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;
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ENT
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RAM_ROUTINES.Size EQU $-RAM_ROUTINES
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;<<<<<<<<<<<<<<<<<<<<<<<<< End of RAM Routines >>>>>>>>>>>>>>>>>>>>>>>>>;
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@ -1054,7 +1122,10 @@ L00C9: LD A,B ;
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LD HL,#C000 ; Start of the current RAM bank.
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LD DE,#C001 ;
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LD BC,#3FFF ; All 16K of RAM bank.
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;!TEST
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LD A,#FF ;
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;LD A,C
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;
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LD (HL),A ; Store #FF into RAM location.
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CP (HL) ; Check RAM integrity.
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JR NZ,L0131 ; Jump if RAM error found.
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@ -1069,7 +1140,6 @@ L00C9: LD A,B ;
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DJNZ L00C9 ; Repeat for other RAM banks.
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LD (ROW01),A ; #5B88. Signal no communications in progress to the keypad.
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LD C,#FD ;
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LD D,#FF ;
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LD E,#BF ;
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@ -1077,11 +1147,15 @@ L00C9: LD A,B ;
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LD A,#0E ;
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OUT (C),A ; Select AY register 14.
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LD B,E ; BC=#BFFD.
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;!TEST
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LD A,#FF ;
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OUT (C),A ; Set AY register 14 to #FF. This will force a communications reset to the keypad if present.
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JR L0137 ; Jump ahead to continue.
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L00FF: DB #00 ; [Spare byte]
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;OUT (C),D
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;JR L0137
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;
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_mInfoBLOCK #0100 - $,0
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;L00FF: DB #00 ; [Spare byte]
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; ====================
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@ -1166,7 +1240,7 @@ L0137: LD B,D ; Complete setting up the sound chip registers.
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LD HL,#2BEC ;
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LD A,#01 ; AHL=Free space in RAM disk.
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LD (SFSPACE),HL ; #5B85. Current address.
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LD (SFSPACE+2),A ; #5B87. Current RAM bank.
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LD (SFSPACE+2),A; #5B87. Current RAM bank.
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LD A,#05 ;
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CALL L1C64 ; Page in logical RAM bank 5 (physical RAM bank 0).
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@ -1178,7 +1252,7 @@ L0137: LD B,D ; Complete setting up the sound chip registers.
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LD BC,#00A8 ; There are 21 User Defined Graphics to copy.
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EX DE,HL ; Swap so destination is #FFFF.
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RST #28 ;
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DW MAKE_ROOM+#000C ; Calling this address (LDDR/RET) in the main ROM
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DW MAKE_ROOM+#000C; Calling this address (LDDR/RET) in the main ROM
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; cleverly copies the 21 characters to the end of RAM.
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EX DE,HL ; Transfer DE to HL.
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@ -9313,10 +9387,6 @@ L2330: CALL L18A1 ; Ensure end-of-statement or end-of-line.
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;ÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛ;
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;ÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛÛ;
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; ------------------------------
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; Main Menu - Tape Loader Option
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; ------------------------------
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@ -14054,9 +14124,9 @@ L335F: LD HL,#0000 ; Signal no line number of command.
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LD (#FC9F),HL ; Signal no further character to fetch from the BASIC line within the program area.
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LD (#FCA1),HL ; Signal no further character to fetch from the Keyword Construction Buffer.
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LD HL,RAM_Routines ; Source for Insert Keyword Representation Into Keyword Construction Buffer routine.
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LD HL,RAM_Routines2 ; Source for Insert Keyword Representation Into Keyword Construction Buffer routine.
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LD DE,#FCAE ; Destination for Insert Keyword Representation Into Keyword Construction Buffer routine.
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LD BC,RAM_Routines.Size
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LD BC,RAM_Routines2.Size
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LDIR ; Copy the routine to RAM bank 7 at address #FCAE.
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RET ;
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@ -14075,7 +14145,7 @@ L335F: LD HL,#0000 ; Signal no line number of command.
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; DE=Insertion address within Keyword Construction Buffer.
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;
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; Copied to physical RAM bank 7 at #FCAE-#FCFC by subroutine at #335F (ROM 0).
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RAM_Routines:
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RAM_Routines2:
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L3374: DI ; Disable interrupts whilst paging.
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LD BC,#7FFD ;
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@ -14260,7 +14330,7 @@ L3426: LD A,B ; Fetch the character code of the matching token (#00
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OUT (C),D ;
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EI ; Re-enable interrupts.
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RET ; <<< Last byte copied to RAM >>>
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RAM_Routines.Size EQU $-RAM_Routines
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RAM_Routines2.Size EQU $-RAM_Routines2
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; ---------------------------------------------------------------------
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; Create Next Line Number Representation in Keyword Construction Buffer
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; ---------------------------------------------------------------------
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@ -137,8 +137,8 @@ CONT_5:
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////////////////////////////////////////////////////////////////////////
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REDIR_RST38:
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_mInfoBLOCK #38-$,#FF
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REDIR_RST38:
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; JP RST38X
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; EI
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; RET
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@ -7,7 +7,8 @@
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; The Spectrum ROMs are copyright Amstrad, who have kindly given permission
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; to reverse engineer and publish ROM disassemblies.
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; DEFINE NEW_TAP_PROC
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SWAP_ROM EQU #5B00 ; 20 Swap paging subroutine for BASIC 128 ROM
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; =====
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; NOTES
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; =====
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@ -19166,7 +19167,7 @@ L3B46: LD HL,#010F ; Vector table entry in Editor ROM -> JP #03A2
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; Return to Editor ROM at address in HL
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L3B49: EX (SP),HL ; Change the return address
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JP #5B00 ; Page Editor ROM and return to the address on the stack
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JP SWAP_ROM ; Page Editor ROM and return to the address on the stack
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; -------------------------------------
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; STATEMENT INTERPRETATION RETURN PATCH
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