From b4f3ac35e69b7d5adf57959902abe2a104b42f4f Mon Sep 17 00:00:00 2001 From: Joshua Wise Date: Mon, 28 Apr 2008 05:18:39 -0400 Subject: [PATCH] Fix insn_bit. HOLY SHIT THE BOOT ROM WORKS c.c --- GBZ80Core.v | 24 ++++++++++++------------ LCDC.v | 3 ++- Makefile | 3 ++- bootrom.asm | 24 +++++++++++++++++++++--- diag.asm | 7 +++++-- insn_bit.v | 1 + insn_ret-retcc.v | 8 ++++---- 7 files changed, 47 insertions(+), 23 deletions(-) diff --git a/GBZ80Core.v b/GBZ80Core.v index 45870d1..05c449a 100644 --- a/GBZ80Core.v +++ b/GBZ80Core.v @@ -220,18 +220,18 @@ module GBZ80Core( ); initial begin - registers[ 0] <= 0; - registers[ 1] <= 0; - registers[ 2] <= 0; - registers[ 3] <= 0; - registers[ 4] <= 0; - registers[ 5] <= 0; - registers[ 6] <= 0; - registers[ 7] <= 0; - registers[ 8] <= 0; - registers[ 9] <= 0; - registers[10] <= 0; - registers[11] <= 0; + `_A <= 0; + `_B <= 0; + `_C <= 0; + `_D <= 0; + `_E <= 0; + `_F <= 0; + `_H <= 0; + `_L <= 0; + `_PCH <= 0; + `_PCL <= 0; + `_SPH <= 0; + `_SPL <= 0; rd <= 1; wr <= 0; newcycle <= 1; diff --git a/LCDC.v b/LCDC.v index 1f29d4a..7b402e4 100644 --- a/LCDC.v +++ b/LCDC.v @@ -145,7 +145,8 @@ module LCDC( reg [7:0] tileno; wire [10:0] tileaddr = {tileno, vypos[2:0]}; reg [7:0] tilehigh, tilelow; - assign pixdata = {tilehigh[7-vxpos[2:0]], tilelow[7-vxpos[2:0]]}; + wire [1:0] prepal = {tilehigh[7-vxpos[2:0]], tilelow[7-vxpos[2:0]]}; + assign pixdata = {rBGP[{prepal,1'b1}],rBGP[{prepal,1'b0}]}; wire decode_tiledata = (addr >= 16'h8000) && (addr <= 16'h97FF); wire decode_bgmap1 = (addr >= 16'h9800) && (addr <= 16'h9BFF); diff --git a/Makefile b/Makefile index fae41fe..466b640 100644 --- a/Makefile +++ b/Makefile @@ -6,7 +6,8 @@ VLOGS = 7seg.v GBZ80Core.v insn_call-callcc.v insn_incdec16.v \ insn_alu_a.v insn_halt.v insn_jp-jpcc.v insn_ld_hl_reg.v \ insn_ld_reg_imm8.v insn_ldx_ahl.v insn_push_reg.v insn_vop_intr.v \ Timer.v LCDC.v insn_ldm8_a.v insn_ldm16_a.v Framebuffer.v \ - insn_ldbcde_a.v insn_alu_ext.v insn_bit.v insn_two_byte.v + insn_ldbcde_a.v insn_alu_ext.v insn_bit.v insn_two_byte.v \ + insn_incdec_reg8.v all: CoreTop_rom.svf CoreTop_diag.svf CoreTop_bootrom.svf CoreTop.twr diff --git a/bootrom.asm b/bootrom.asm index b2a2db8..3cdf0e9 100644 --- a/bootrom.asm +++ b/bootrom.asm @@ -35,7 +35,7 @@ Addr_0027: CP $34 ; $0030 JR NZ, Addr_0027 ; $0032 - LD DE,$00d8 ; $0034 Load 8 additional bytes into Video RAM + LD DE,Addr_00D8 ; $0034 Load 8 additional bytes into Video RAM LD B,$08 ; $0037 Addr_0039: LD A,[DE] ; $0039 @@ -129,7 +129,7 @@ Addr_0098: INC HL ; $00a6 RET ; $00a7 -Addr_00A8: +NintendoLogo: ;Nintendo Logo DB $CE,$ED,$66,$66,$CC,$0D,$00,$0B,$03,$73,$00,$83,$00,$0C,$00,$0D DB $00,$08,$11,$1F,$88,$89,$00,$0E,$DC,$CC,$6E,$E6,$DD,$DD,$D9,$99 @@ -143,7 +143,7 @@ Addr_00D8: Addr_00E0: LD HL,$0104 ; $00e0 ; point HL to Nintendo logo in cart - LD DE,$00a8 ; $00e3 ; point DE to Nintendo logo in DMG rom + LD DE,NintendoLogo ; $00e3 ; point DE to Nintendo logo in DMG rom Addr_00E6: LD A,[DE] ; $00e6 @@ -168,3 +168,21 @@ Addr_00F4: LD A,$01 ; $00fc LD [$FF50],A ; $00fe ;turn off DMG rom + + + SECTION "b",HOME[$100] +boot: jr .running ; $0100 + nop ; $0102 + nop ; $0103 + ;Nintendo Logo ; $0104 + DB $CE,$ED,$66,$66,$CC,$0D,$00,$0B,$03,$73,$00,$83,$00,$0C,$00,$0D + DB $00,$08,$11,$1F,$88,$89,$00,$0E,$DC,$CC,$6E,$E6,$DD,$DD,$D9,$99 + DB $BB,$BB,$67,$63,$6E,$0E,$EC,$CC,$DD,$DC,$99,$9F,$BB,$B9,$33,$3E + ;$0134 + DB $00,$E7,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00 + ;$0144 + DB $00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00 +.running: + ld a, $FF + ld [$FF51], A +.diq: jr .diq diff --git a/diag.asm b/diag.asm index 668452d..d269b25 100644 --- a/diag.asm +++ b/diag.asm @@ -91,6 +91,9 @@ tiles: db %00000000 putscreen: + LD A,$fc ; $001d Setup BG palette + LD [$FF47],A ; $001f + ; Wait for vblank call .vblwait @@ -318,8 +321,8 @@ waitsw: ld a,[c] cp $0 jr z,.loop1 -.loop2: - ld a,[c] + +.loop2: ld a,[c] cp $0 jr nz,.loop2 ret diff --git a/insn_bit.v b/insn_bit.v index c4b1fe5..379215e 100644 --- a/insn_bit.v +++ b/insn_bit.v @@ -5,6 +5,7 @@ end else if ((opcode[2:0] == `INSN_reg_dHL) && (cycle == 2)) begin `EXEC_NEWCYCLE end else begin + `EXEC_INC_PC case (opcode[2:0]) `INSN_reg_A: tmp <= `_A; `INSN_reg_B: tmp <= `_B; diff --git a/insn_ret-retcc.v b/insn_ret-retcc.v index bad4c04..dab27c3 100644 --- a/insn_ret-retcc.v +++ b/insn_ret-retcc.v @@ -5,10 +5,10 @@ 1: begin // SPECIAL CASE: cycle does NOT increase linearly with ret! `EXEC_INC_PC // cycle 1 is skipped if we are not retcc case (opcode[4:3]) - `INSN_cc_NZ: if (registers[`REG_F][7]) `EXEC_NEWCYCLE - `INSN_cc_Z: if (~registers[`REG_F][7]) `EXEC_NEWCYCLE - `INSN_cc_NC: if (registers[`REG_F][4]) `EXEC_NEWCYCLE - `INSN_cc_C: if (~registers[`REG_F][4]) `EXEC_NEWCYCLE + `INSN_cc_NZ: if (`_F[7]) `EXEC_NEWCYCLE + `INSN_cc_Z: if (~`_F[7]) `EXEC_NEWCYCLE + `INSN_cc_NC: if (`_F[4]) `EXEC_NEWCYCLE + `INSN_cc_C: if (~`_F[4]) `EXEC_NEWCYCLE endcase `EXEC_READ(`_SP) // retry the read end -- 2.43.0