mirror of
https://github.com/Ed94/pikuma_ps1.git
synced 2026-06-01 18:41:13 -07:00
70 lines
2.4 KiB
ArmAsm
70 lines
2.4 KiB
ArmAsm
.psx
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.create "./build/hello_logo.bin", 0x80010000
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.include "./code/graphics_hello/dsl.s"
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.include "./code/graphics_hello/gp.s"
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Color_RedFF equ 0x0000FF
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Color_22 equ 0x222222
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Color_PS_CadmiumRed equ 0x2400DF
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Color_PS_CelticBlue equ 0x723F00
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Color_PS_GoldenPoppy equ 0x00C3F3
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Color_PS_PersianGreen equ 0x9FAC00
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Display_Width equ (640)
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Display_Height equ (480)
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Display_HalfWidth equ Display_Width / 2
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Display_HalfHeight equ Display_Height / 2
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// TODO(Ed): Figure out an auto-region?
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.org 0x80010000 + 4000
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Image_SizeX equ 640 * 3 / 2 ; 24bbp needs 1.5x
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Image_SizeY equ 480
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Image_ByteSize equ Image_SizeX * Image_SizeY * gp_pixel24
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Image:
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.incbin "./assets/logo.bin"
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; Entry Point of Code
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.org 0x80010000
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main:
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reg_io_offset equ rtmp_0
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load_uimm rtmp_0, IO_BASE_ADDR
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gp0 equ gpio_port0(reg_io_offset)
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gp1 equ gpio_port1(reg_io_offset)
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; Setup Display Control
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gcmd_push gp1, rtmp_1, gp_Reset
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gcmd_push gp1, rtmp_1, gp_DisplayEnabled
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gcmd_push gp1, rtmp_1, gp_DisplayMode | gp_Disp_Color24 | gp_Disp_VInterlace | gp_Disp_VRes_480 | gp_Disp_HRes_640
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// gcmd_push gp1, rtmp_1, gp_DisplayMode_320x240_15bit_NTSC
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// gcmd_push gp1, rtmp_1, gp_DisplayMode_640x480_24bbp_NTSC
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gcmd_push gp1, rtmp_1, gp_HorizontalDisplayRange_3168_608
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gcmd_push gp1, rtmp_1, gp_VerticalDisplayRange_504_24
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gcmd_push gp0, rtmp_1, gp_ModeSetting_DipArea
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gcmd_push gp0, rtmp_1, gp_SetArea_TopLeft | 0 << gp_b10_Y | 0 << gp_b10_X
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gcmd_push gp0, rtmp_1, gp_SetArea_BottomRight | Display_Height << gp_b10_Y | Display_Width << gp_b10_X
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gcmd_push gp0, rtmp_1, gp_SetOffset | 0 << gp_b10_Y | 0 << gp_b10_X
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; Copy image contents to vram
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gcmd_push gp0, rtmp_1, gp_Blit_CPU_VM
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gcmd_push gp0, rtmp_1, 0 << gp_b16_Y | 0 << gp_b16_X ; Top Left
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gcmd_push gp0, rtmp_1, Image_SizeY << gp_b16_Y | Image_SizeX << gp_b16_X ; Bottom Right
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; DMA commands
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@id equ rtmp_2
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@img_cursor equ rtmp_3
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load_imm @id, Image_ByteSize
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shift_rl @id, @id, (word / 2)
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load_addr @img_cursor, Image
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loop_dma:
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load_word rtmp_1, (@img_cursor)
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add_si @img_cursor, @img_cursor, word ; @img_cursor ++ (delay slot filled)
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store_word rtmp_1, gp0 ; @img_curor -> gp_dma_cpu_vm(word)
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branch_ne_zero @id, loop_dma :: add_ui @id, @id, -1 ; if != @id, 0 goto loop_dma :: -- @id (delay slot filled)
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idle:
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jump idle :: nop
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.close
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