SPC Player: Fix occasional memory transfer errors, relax IO code exec…

… timing

snes/spc700.a65

@@ -105,14 +105,15 @@ spc_transfer:       ; .org $0002
   .byt $e4,$f7      ;  mov a,$f7  ; tell S-CPU we're ready for more
   .byt $cb,$f7      ;  mov $f7,Y
   .byt $d6,$c0,$02  ; mov3: mov !$02c0+y,a
+  .byt $00          ;  nop ; give some time for S-CPU HDMA / WRAM refresh
   .byt $dc          ;  dec y
-  .byt $10,-25      ;  bpl quad
+  .byt $10,-26      ;  bpl quad
 ; Increment MSBs of addresses
   .byt $ab,$0a      ;  inc mov0+2
   .byt $ab,$0f      ;  inc mov1+2
   .byt $ab,$14      ;  inc mov2+2
   .byt $ab,$1b      ;  inc mov3+2
   .byt $1d          ;  dec x
-  .byt $d0,-38      ;  bne page
+  .byt $d0,-39      ;  bne page
 ; Rerun loader
   .byt $5f,$c0,$ff  ;  jmp $ffc0

snes/spcplay.a65

@@ -239,7 +239,6 @@ spc700_load:
   jsr upload_high_ram ; Upload 63.5K of SPC700 ram
   jsr upload_low_ram  ; Upload rest of ram
   jsr restore_final   ; Restore SPC700 state & start execution
-
   lda #$81            ; VBlank NMI + Auto Joypad Read
   sta $4200           ; enable V-BLANK NMI
   cli
@@ -341,7 +340,7 @@ upload_high_ram:
   lda @spc_transfer,x
   jsr spc_upload_byte
   inx
-  cpy #43             ; size of transfer routine
+  cpy #44             ; size of transfer routine
   bne -
 
   ldx #$023f          ; prepare transfer address
@@ -660,10 +659,10 @@ exec_instr:
 ; isn't needed, as this avoids such tight timing
 ; requirements.
 
-;  phd                 ; 4
-;  pld                 ; 5
-;  phd                 ; 4
-;  pld                 ; 5
+  phd                 ; 4
+  pld                 ; 5
+  phd                 ; 4
+  pld                 ; 5
 
 ; Patch loop to skip first two bytes
   lda #$fe            ; 16