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more Z80 optimizations

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FeralChild64 authored and FeralChild64 committed 2021-01-26 00:03:07 +01:00
1 parent c9572d48df
commit d3b05ca2d6
17 files changed
+108 -162
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src/zvm_m65/,aliases_zvm.s
+18 -20
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@@ -12,17 +12,17 @@
!addr REG_BC = $04 ; 2 bytes - combined register
!addr REG_C = REG_BC+0
!addr REG_B = REG_BC+1
!addr REG_BC_EXT1 = $06 ; 2 bytes - helper for faster access via BC in bank 1
!addr REG_BC_EXT = $06 ; 2 bytes - helper for faster access via BC in bank 1
!addr REG_DE = $08 ; 2 bytes - combined register
!addr REG_E = REG_DE+0
!addr REG_D = REG_DE+1
!addr REG_DE_EXT1 = $0A ; 2 bytes - helper for faster access via DE in bank 1
!addr REG_DE_EXT = $0A ; 2 bytes - helper for faster access via DE in bank 1
!addr REG_HL = $0C ; 2 bytes - combined register
!addr REG_L = REG_HL+0
!addr REG_H = REG_HL+1
!addr REG_HL_EXT1 = $0E ; 2 bytes - helper for faster access via HL in bank 1
!addr REG_HL_EXT = $0E ; 2 bytes - helper for faster access via HL in bank 1
!addr REG_SHADOW = $10 ; 8 bytes - shadow registers
!addr REG_F_SH = REG_SHADOW+0
@@ -35,9 +35,9 @@
!addr REG_H_SH = REG_SHADOW+7
!addr REG_SP = $18 ; 2 bytes - stack pointer
!addr REG_SP_EXT1 = $1A ; 2 bytes - helper for faster access via SP in bank 1
!addr REG_SP_EXT = $1A ; 2 bytes - helper for faster access via SP in bank 1
!addr REG_PC = $1C ; 2 bytes - sprogram counter
!addr REG_PC_EXT1 = $1E ; 2 bytes - helper for faster access via PC in bank 1
!addr REG_PC_EXT = $1E ; 2 bytes - helper for faster access via PC in bank 1
!addr REG_IX = $20 ; 2 bytes - index register
!addr REG_IXL = REG_IX+0
@@ -86,7 +86,7 @@
!addr zvm_bankvectors__start = $40
!addr VEC_fetch_via_PC_inc = $40 ; fetch to .A from (PC), increment PC afterwards
!addr VEC_fetch_stack = $42 ; fetch to .A - stack POP operation, destroys .X
!addr VEC_fetch_stack = $42 ; fetch to .A - stack POP operation
!addr VEC_store_stack = $44 ; store .A - stack PUSH operation, destroys .X
; XXX implement routines for vectors below
@@ -96,18 +96,17 @@
!addr VEC_fetch_via_DE = $4A
!addr VEC_store_via_DE = $4C
!addr VEC_fetch_via_HL = $4E
!addr VEC_fetch_via_HL_back = $50 ; forces PTR_DATA update
!addr VEC_store_via_HL = $52
!addr VEC_fetch_via_IX_d = $54
!addr VEC_fetch_via_IY_d = $56
!addr VEC_store_via_IX_d = $58
!addr VEC_store_via_IY_d = $5A
!addr VEC_fetch_via_nn = $5C
!addr VEC_store_via_nn = $5E
!addr VEC_fetch_via_plus1 = $60
!addr VEC_store_via_plus1 = $62 ; XXX jump to next directly?
!addr VEC_xchng_stack_lo = $64
!addr VEC_xchng_stack_hi = $68
!addr VEC_store_via_HL = $50
!addr VEC_fetch_via_IX_d = $52
!addr VEC_fetch_via_IY_d = $54
!addr VEC_store_via_IX_d = $56
!addr VEC_store_via_IY_d = $58
!addr VEC_fetch_via_nn = $5A
!addr VEC_store_via_nn = $5C
!addr VEC_fetch_via_plus1 = $5E
!addr VEC_store_via_plus1 = $60 ; XXX jump to next directly?
!addr VEC_xchng_stack_lo = $62
!addr VEC_xchng_stack_hi = $64
;
; Constant/macros definitions
@@ -150,5 +149,4 @@
; Helper tables for CPU emulation, downwards from $2000
;
!addr z80_atable_mi_bank0 = $1FF0 ; table for bank 0 memory address conversion
!addr z80_atable_hi_bank0 = $1FE0 ; table for bank 0 memory address conversion
!addr z80_atable_bank0 = $1FE0 ; table for bank 0 memory address conversion