Migrated some SHR code to main memory.
This commit is contained in:
Bobbi Webber-Manners
parent
403baeeeff
commit
74b856e8f5
BIN
applecorn.po
BIN
applecorn.po
Binary file not shown.
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@ -281,6 +281,7 @@ MAINZP MAC
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PUT MAINMEM.INIT
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PUT MAINMEM.SVC
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PUT MAINMEM.HGR
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PUT MAINMEM.SHR
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PUT MAINMEM.PATH
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PUT MAINMEM.WILD
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PUT MAINMEM.LISTS
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241
auxmem.shr.s
241
auxmem.shr.s
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@ -99,7 +99,8 @@ SHRVDU22 LDA #$18 ; Inhibit SHR & aux HGR shadowing
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CPX #200 ; 200 lines so 200 SCBs
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BNE :L1
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JSR SHRDEFPAL ; Default palette
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JSR SHRXPLDFONT ; Explode font -> SHRFONTXPLD table
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>>> XF2MAIN,SHRXPLDFONT ; Explode font -> SHRFONTXPLD table
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SHRV22RET >>> ENTAUX
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JSR VDU12 ; Clear text and SHR screen
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RTS
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@ -107,8 +108,6 @@ SHRVDU22 LDA #$18 ; Inhibit SHR & aux HGR shadowing
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* Data in bank $E1
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******************************************************************************
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SHRFONTXPLD EQU $A000 ; Explode SHR font to $E1:A000
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* Used for long writes
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SHRCOLMASKL EQU $E1B000 ; Colour mask foreground (word)
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SHRBGMASKL EQU $E1B002 ; Colour mask background (word)
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@ -122,188 +121,6 @@ SHRBGMASK EQU $B002 ; Colour mask background (word)
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SHRBGMASKA DW $0000 ; Keep a copy in aux mem too
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* Explode font to generate SHRFONTXPLD table
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* This is 2 bytes x 8 rows for each character in 640 mode
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* or 4 bytes x 8 rows for each character in 320 mode
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SHRXPLDFONT LDA #<SHRFONTXPLD ; Use VDUADDR to point to ..
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STA VDUADDR+0 ; .. start of table to write
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LDA #>SHRFONTXPLD
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STA VDUADDR+1
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LDA #$E1
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STA VDUBANK
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LDA #32 ; First char number
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:L1 JSR SHRXPLDCHAR ; Explode char A
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INC A
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CMP #128 ; 96 chars in FONT8
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BNE :L1
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RTS
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* Explode one character to location pointed to by VDUADDR
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* On entry: A - character to explode
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SHRXPLDCHAR PHA
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SEC
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SBC #32
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STA ZP1+0 ; A*8 -> ZP1
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STZ ZP1+1
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ASL ZP1+0
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ROL ZP1+1
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ASL ZP1+0
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ROL ZP1+1
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ASL ZP1+0
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ROL ZP1+1
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CLC ; FONT8+A*8 -> ZP1
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LDA ZP1+0
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ADC #<FONT8
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STA ZP1+0
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LDA ZP1+1
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ADC #>FONT8
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STA ZP1+1
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LDY #$00 ; First row of char
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:L1 >>> RDMAIN
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LDA (ZP1),Y ; Load row of font
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>>> RDAUX
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JSR SHRXPLDROW
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INY ; Next row of font
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CPY #$08 ; Last row?
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BNE :L1
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PLA
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RTS
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* Explode one pixel row of user defined graphics char
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* On entry: A contains row of font data
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SHRUSERCHAR LDA #<SHRFONTXPLD ; Use VDUADDR to point to ..
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STA VDUADDR+0 ; .. start of table to write
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LDA #>SHRFONTXPLD
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STA VDUADDR+1
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LDA #$E1
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STA VDUBANK
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LDA VDUQ+0 ; Character number
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CMP #32 ; < 32? Then bail out
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BCC :DONE
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SEC ; Otherwise, subtract 32
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SBC #32
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TAY
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LDA #16 ; Bytes/char in 640 mode
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LDX VDUPIXELS ; Pixels per byte
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CPX #$02 ; 2 is 320-mode (MODE 1)
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BNE :S0
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LDA #32 ; Bytes/char in 320 mode
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:S0 STA :INCREMENT
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:L0 CPY #$00
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BEQ :S1
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CLC
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LDA VDUADDR+0
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ADC :INCREMENT
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STA VDUADDR+0
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LDA VDUADDR+1
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ADC #$00
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STA VDUADDR+1
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DEY
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BRA :L0
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:S1 LDY #$00
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:L1 LDA VDUQ+1,Y ; Row of pixels
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JSR SHRXPLDROW
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INY
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CPY #$08 ; Last row?
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BNE :L1
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:DONE RTS
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:INCREMENT DB $00
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* Explode one row of pixels. Used by SHRXPLDCHAR & SHRUSERCHAR
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* On entry: A contains row of font data
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SHRXPLDROW LDX VDUPIXELS ; Pixels per byte
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CPX #$02 ; 2 is 320-mode (MODE 1)
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BNE :S1
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JSR SHRCHAR320
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BRA :S2
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:S1 JSR SHRCHAR640
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:S2 LDX VDUPIXELS ; Pixels per byte
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CPX #$02 ; 2 is 320-mode (MODE 1)
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BNE :S3
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CLC ; 320 mode: add 4 to VDUADDR
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LDA VDUADDR+0
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ADC #$04
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STA VDUADDR+0
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LDA VDUADDR+1
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ADC #$00
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STA VDUADDR+1
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BRA :S4
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:S3 CLC ; 640 mode: add 2 to VDUADDR
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LDA VDUADDR+0
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ADC #$02
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STA VDUADDR+0
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LDA VDUADDR+1
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ADC #$00
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STA VDUADDR+1
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:S4 RTS
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* Explode one pixel row of font in 320 mode
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* 4 bytes per char, 4 bits per pixel
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* On entry: A contains row of font data
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SHRCHAR320 PHY ; Preserve Y
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LDY #$00 ; Dest byte index
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:L0 STZ ZP2
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LDX #$00 ; Source bit index
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:L1 ASL ; MS bit -> C
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PHP ; Preserve C
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ROL ZP2 ; C -> LS bit
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PLP ; Recover C
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PHP
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ROL ZP2 ; C -> LS bit
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PLP ; Recover C
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PHP
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ROL ZP2 ; C -> LS bit
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PLP ; Recover C
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ROL ZP2 ; C -> LS bit
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INX
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CPX #$02 ; Processed two bits of font?
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BNE :L1
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PHA ; Preserve partially shifted font
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LDA ZP2
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STA [VDUADDR],Y
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PLA ; Recover partially shifted font
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INY
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CPY #$04 ; Done 4 bytes?
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BNE :L0
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PLY ; Recover Y
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RTS
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* Explode one pixel row of font in 640 mode
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* 2 bytes per char, 2 bits per pixel
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* On entry: A contains row of font data
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SHRCHAR640 PHY ; Preserve Y
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LDY #$00 ; Dest byte index
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:L0 STZ ZP2
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LDX #$00 ; Source bit index
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:L1 ASL ; MS bit -> C
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PHP ; Preserve C
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ROL ZP2 ; C -> LS bit
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PLP ; Recover C
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ROL ZP2 ; C -> LS bit
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INX
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CPX #$04
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BNE :L1
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PHA ; Preserve partially shifted font
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LDA ZP2
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STA [VDUADDR],Y
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PLA ; Recover partially shifted font
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INY
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CPY #$02 ; Done 2 bytes?
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BNE :L0
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PLY ; Recover Y
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RTS
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* Write character to SHR screen
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* On entry: A - character to write
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SHRPRCHAR CMP CURSORED ; Edit cursor?
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@ -881,57 +698,3 @@ SHRPALCUSTOM PHA ; Preserve GB components
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STAL $E19E00+1,X ; Store in logical slot
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RTS
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* Convert high-resolution screen coordinates
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* from 1280x1024 to 620x200 or 320x200
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* TODO: Move to mainmem
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SHRCOORD PHP ; Disable interrupts
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SEI
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CLC ; 65816 native mode
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XCE
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REP #$30 ; 16 bit M & X
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MX %00 ; Tell Merlin
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* X-coordinate in VDUQ+5,+6 MODE0:1280/2=640 or MODE1:1280/4=320
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LDA VDUPIXELS ; Pixels per byte
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AND #$00FF
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CMP #$02 ; 2 is 320-mode (MODE 1)
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BNE :MODE0
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LDA VDUQ+5
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LSR ; /2
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LSR ; /4
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STA ZP1 ; TODO: Store somewhere sensible
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BRA :Y
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:MODE0 LDA VDUQ+5
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LSR ; /2
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STA ZP1 ; TODO: Store somewhere sensible
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* Y-coordinate in VDUQ+7,+8 1024*3/16=192, 1024/128=8, 192+8=200
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:Y LDA VDUQ+7
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ASL ; *2
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CLC
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ADC VDUQ+7 ; *3
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LSR ; *3/2
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LSR ; *3/4
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LSR ; *3/8
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LSR ; *3/16
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STA ZP1 ; (ZP1 and ZP2)
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LDA VDUQ+7
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LSR ; /2
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LSR ; /4
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LSR ; /8
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LSR ; /16
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LSR ; /32
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LSR ; /64
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LSR ; /128
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CLC
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ADC ZP1 ; Result
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STA ZP1 ; TODO: Store somewhere sensible
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SEC ; Back to emulation mode
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XCE
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MX %11 ; Tell Merlin
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PLP ; Normal service resumed
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RTS
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27
auxmem.vdu.s
27
auxmem.vdu.s
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@ -600,6 +600,9 @@ VDU22 JSR NEGCALL ; Find machine type
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STA VDUBYTES ; Bytes per char
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LDA SCNPIXELS,X
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STA VDUPIXELS ; Pixels per byte
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>>> WRTMAIN
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STA SHRPIXELS
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>>> WRTAUX
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LDA SCNTYPE,X
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STA VDUSCREEN ; Screen type
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LDA #$01
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@ -1127,9 +1130,7 @@ VDUCOPYEXIT RTS
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* x is in VDUQ+5,VDUQ+6
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* y is in VDUQ+7,VDUQ+8
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*
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* TO DO:
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* clip to viewport
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* TO DO: Clip to viewport
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VDU25 LDA VDUQ+4
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AND #$04 ; Bit 2 set -> absolute
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@ -1166,7 +1167,7 @@ ADJORIG CLC
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LDA GFXORIGX+1
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ADC VDUQ+6
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STA VDUQ+6
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CLC
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CLC
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LDA GFXORIGY+0
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ADC VDUQ+7
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STA VDUQ+7
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@ -1195,10 +1196,22 @@ RELCOORD CLC
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* Program video system and define characters
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* VDU 23,charnum,row1,row2,row3,row4,row5,row6,row7,row8
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VDU23 BIT VDUSCREEN ; Check we are in SHR mode
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BVC :NOTSHR
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JSR SHRUSERCHAR
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:NOTSHR RTS
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BVS :SHR
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RTS
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:SHR JSR VDUCOPYMAIN ; Copy VDUQ to main mem
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>>> XF2MAIN,SHRUSERCHAR
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VDU23RET >>> ENTAUX
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RTS
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* Copy VDUQ to SHRVDUQ in main memory
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VDUCOPYMAIN LDY #$00
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:L1 LDA VDUQ,Y ; Copy VDUQ to SHRVDUQ
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>>> WRTMAIN
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STA SHRVDUQ,Y
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>>> WRTAUX
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INY
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CPY #16
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BNE :L1
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* Read from VDU system
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**********************
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@ -0,0 +1,257 @@
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* MAINMEM.SHR.S
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* (c) Bobbi 2022 GPLv3
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*
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* Routines for drawing bitmapped text and graphics in SHR mode
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* on Apple IIGS (640x200 4 colour, or 320x200 16 colour.)
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*
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* This code is in main memory only to save space in aux LC.
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*
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******************************************************************************
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* Data in bank $E1
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******************************************************************************
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SHRFONTXPLD EQU $A000 ; Explode SHR font to $E1:A000
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******************************************************************************
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SHRPIXELS DB $00 ; Main memory copy of VDUPIXELS
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SHRVDUQ DS 16 ; Main memory copy of VDUQ
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* Explode font to generate SHRFONTXPLD table
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* This is 2 bytes x 8 rows for each character in 640 mode
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* or 4 bytes x 8 rows for each character in 320 mode
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SHRXPLDFONT >>> ENTMAIN
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LDA #<SHRFONTXPLD ; Use A3L/H to point to ..
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STA A3L ; .. start of table to write
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LDA #>SHRFONTXPLD
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STA A3H
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LDA #$E1 ; Memory bank $E1
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STA A4L
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LDA #32 ; First char number
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:L1 JSR SHRXPLDCHAR ; Explode char A
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INC A
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CMP #128 ; 96 chars in FONT8
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BNE :L1
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>>> XF2AUX,SHRV22RET
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RTS
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* Explode one character to location pointed to by A3L
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* On entry: A - character to explode
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SHRXPLDCHAR PHA
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SEC
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SBC #32
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STA A1L ; A*8 -> A1L/H
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STZ A1H
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ASL A1L
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ROL A1H
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ASL A1L
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ROL A1H
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ASL A1L
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ROL A1H
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CLC ; FONT8+A*8 -> A1L/H
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LDA A1L
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ADC #<FONT8
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STA A1L
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LDA A1H
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ADC #>FONT8
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STA A1H
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LDY #$00 ; First row of char
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:L1 LDA (A1L),Y ; Load row of font
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JSR SHRXPLDROW
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INY ; Next row of font
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CPY #$08 ; Last row?
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BNE :L1
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PLA
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RTS
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* Explode one pixel row of user defined graphics char
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SHRUSERCHAR >>> ENTMAIN
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LDA #<SHRFONTXPLD ; Use A3L/H to point to ..
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STA A3L ; .. start of table to write
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LDA #>SHRFONTXPLD
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STA A3H
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LDA #$E1
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STA A4L
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LDA SHRVDUQ+0 ; Character number
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CMP #32 ; < 32? Then bail out
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BCC :DONE
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SEC ; Otherwise, subtract 32
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SBC #32
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TAY
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LDA #16 ; Bytes/char in 640 mode
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LDX SHRPIXELS ; Pixels per byte
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CPX #$02 ; 2 is 320-mode (MODE 1)
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BNE :S0
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LDA #32 ; Bytes/char in 320 mode
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:S0 STA :INCREMENT
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:L0 CPY #$00
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BEQ :S1
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CLC
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LDA A3L
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ADC :INCREMENT
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STA A3L
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LDA A3H
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ADC #$00
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STA A3H
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DEY
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BRA :L0
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:S1 LDY #$00
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:L1 LDA SHRVDUQ+1,Y ; Row of pixels
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JSR SHRXPLDROW
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INY
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CPY #$08 ; Last row?
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BNE :L1
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:DONE RTS
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>>> XF2AUX,VDU23RET
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:INCREMENT DB $00
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* Explode one row of pixels. Used by SHRXPLDCHAR & SHRUSERCHAR
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* On entry: A contains row of font data
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SHRXPLDROW LDX SHRPIXELS ; Pixels per byte
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CPX #$02 ; 2 is 320-mode (MODE 1)
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BNE :S1
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JSR SHRCHAR320
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BRA :S2
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:S1 JSR SHRCHAR640
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:S2 LDX SHRPIXELS ; Pixels per byte
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CPX #$02 ; 2 is 320-mode (MODE 1)
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BNE :S3
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CLC ; 320 mode: add 4 to A3L
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LDA A3L
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ADC #$04
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STA A3L
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LDA A3H
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ADC #$00
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STA A3H
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BRA :S4
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:S3 CLC ; 640 mode: add 2 to A3L
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LDA A3L
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ADC #$02
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STA A3L
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LDA A3H
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ADC #$00
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STA A3H
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:S4 RTS
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* Explode one pixel row of font in 320 mode
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* 4 bytes per char, 4 bits per pixel
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* On entry: A contains row of font data
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SHRCHAR320 PHY ; Preserve Y
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LDY #$00 ; Dest byte index
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:L0 STZ A2L
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LDX #$00 ; Source bit index
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:L1 ASL ; MS bit -> C
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PHP ; Preserve C
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ROL A2L ; C -> LS bit
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PLP ; Recover C
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PHP
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ROL A2L ; C -> LS bit
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PLP ; Recover C
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PHP
|
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ROL A2L ; C -> LS bit
|
||||
PLP ; Recover C
|
||||
ROL A2L ; C -> LS bit
|
||||
INX
|
||||
CPX #$02 ; Processed two bits of font?
|
||||
BNE :L1
|
||||
PHA ; Preserve partially shifted font
|
||||
LDA A2L
|
||||
STA [A3L],Y
|
||||
PLA ; Recover partially shifted font
|
||||
INY
|
||||
CPY #$04 ; Done 4 bytes?
|
||||
BNE :L0
|
||||
PLY ; Recover Y
|
||||
RTS
|
||||
|
||||
|
||||
* Explode one pixel row of font in 640 mode
|
||||
* 2 bytes per char, 2 bits per pixel
|
||||
* On entry: A contains row of font data
|
||||
SHRCHAR640 PHY ; Preserve Y
|
||||
LDY #$00 ; Dest byte index
|
||||
:L0 STZ A2L
|
||||
LDX #$00 ; Source bit index
|
||||
:L1 ASL ; MS bit -> C
|
||||
PHP ; Preserve C
|
||||
ROL A2L ; C -> LS bit
|
||||
PLP ; Recover C
|
||||
ROL A2L ; C -> LS bit
|
||||
INX
|
||||
CPX #$04
|
||||
BNE :L1
|
||||
PHA ; Preserve partially shifted font
|
||||
LDA A2L
|
||||
STA [A3L],Y
|
||||
PLA ; Recover partially shifted font
|
||||
INY
|
||||
CPY #$02 ; Done 2 bytes?
|
||||
BNE :L0
|
||||
PLY ; Recover Y
|
||||
RTS
|
||||
|
||||
|
||||
* Convert high-resolution screen coordinates
|
||||
* from 1280x1024 to 620x200 or 320x200
|
||||
* TODO: Totally untested ...
|
||||
SHRCOORD PHP ; Disable interrupts
|
||||
SEI
|
||||
CLC ; 65816 native mode
|
||||
XCE
|
||||
REP #$30 ; 16 bit M & X
|
||||
MX %00 ; Tell Merlin
|
||||
|
||||
* X-coordinate in SHRVDUQ+5,+6 MODE0:1280/2=640 or MODE1:1280/4=320
|
||||
LDA SHRPIXELS ; Pixels per byte
|
||||
AND #$00FF
|
||||
CMP #$02 ; 2 is 320-mode (MODE 1)
|
||||
BNE :MODE0
|
||||
LDA SHRVDUQ+5
|
||||
LSR ; /2
|
||||
LSR ; /4
|
||||
STA A1L ; TODO: Store somewhere sensible
|
||||
BRA :Y
|
||||
:MODE0 LDA SHRVDUQ+5
|
||||
LSR ; /2
|
||||
STA A1L ; TODO: Store somewhere sensible
|
||||
|
||||
* Y-coordinate in SHRVDUQ+7,+8 1024*3/16=192, 1024/128=8, 192+8=200
|
||||
:Y LDA SHRVDUQ+7
|
||||
ASL ; *2
|
||||
CLC
|
||||
ADC SHRVDUQ+7 ; *3
|
||||
LSR ; *3/2
|
||||
LSR ; *3/4
|
||||
LSR ; *3/8
|
||||
LSR ; *3/16
|
||||
STA A1L ; (A1L and A1H)
|
||||
LDA SHRVDUQ+7
|
||||
LSR ; /2
|
||||
LSR ; /4
|
||||
LSR ; /8
|
||||
LSR ; /16
|
||||
LSR ; /32
|
||||
LSR ; /64
|
||||
LSR ; /128
|
||||
CLC
|
||||
ADC A1L ; Result
|
||||
STA A1L ; TODO: Store somewhere sensible
|
||||
|
||||
SEC ; Back to emulation mode
|
||||
XCE
|
||||
MX %11 ; Tell Merlin
|
||||
PLP ; Normal service resumed
|
||||
RTS
|
||||
|
||||
|
||||
Loading…
Reference in New Issue