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rework main (F3DZEX mostly working?!)

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This commit is contained in:
Connor Olding 2018-08-21 04:40:25 +02:00
parent 49780dbed7
commit a6a769c47c
5 changed files with 177 additions and 133 deletions
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77
dlist.asm Normal file
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@ -0,0 +1,77 @@
// write some F3DZEX instructions to a0
// clobbers t0,t1,a0
define dpos(0)
macro WriteDL(evaluate L, evaluate R) {
lui t0, ({L} >> 16) & 0xFFFF
lui t1, ({R} >> 16) & 0xFFFF
ori t0, {L} & 0xFFFF
ori t1, {R} & 0xFFFF
sw t0, {dpos}+0(a0)
sw t1, {dpos}+4(a0)
global evaluate dpos({dpos}+8)
if {dpos} >= 0x8000 {
error "much too much"
// FIXME: just add dpos to a0 and set dpos to 0 when this happens
}
}
// G_RDPPIPESYNC
WriteDL(0xE7000000, 0)
// G_TEXTURE (disable tile descriptor; dummy second argument)
WriteDL(0xD7000000, 0xFFFFFFFF)
// G_SETCOMBINE (too complicated to explain here...)
WriteDL(0xFCFFFFFF, 0xFFFE793C)
// G_RDPSETOTHERMODE (set higher flags, clear all lower flags)
// 0011 1000 0010 1100 0011 0000
// G_AD_DISABLE | G_CD_MAGICSQ | G_TC_FILT | G_TF_BILERP |
// G_TT_NONE | G_TL_TILE | G_TD_CLAMP | G_MDSFT_TEXTPERSP |
// G_CYC_FILL | G_PM_NPRIMITIVE
WriteDL(0xEF382C30, 0x00000000)
// G_GEOMETRYMODE
// set some bits (TODO: which?), clear none
WriteDL(0xD9000000, 0x00220405)
// G_SETSCISSOR coordinate order: (top, left), (right, bottom)
WriteDL(0xED000000 | (0 << 14) | (0 << 2), (320 << 14) | (240 << 2))
// G_SETBLENDCOLOR
// sets alpha component to 8, everything else to 0
WriteDL(0xF9000000, 0x00000008)
// sets near-far plane clipping? maybe?
// G_MOVEWORD, sets G_MW_CLIP+$0004
WriteDL(0xDB040004, 2)
// G_MOVEWORD, sets G_MW_CLIP+$000C
WriteDL(0xDB04000C, 2)
// G_MOVEWORD, sets G_MW_CLIP+$0014
WriteDL(0xDB040014, 0x10000 - 2)
// G_MOVEWORD, sets G_MW_CLIP+$001C
WriteDL(0xDB04001C, 0x10000 - 2)
// G_SETCIMG, set our color buffer (fmt 0, bit size %10, width)
WriteDL(0xFF100000 | (640 - 1), VIDEO_C_BUFFER)
// G_SETZIMG, set our z buffer (fmt 0, bit size %00, width)
WriteDL(0xFE000000, VIDEO_Z_BUFFER)
// G_SETFILLCOLOR
WriteDL(0xF7000000, 0xFFFFFFFF)
// G_FILLRECT coordinate order: (right, bottom), (top, left)
// note that the coordinates are all inclusive!
WriteDL(0xF6000000 | (199 << 14) | (199 << 2), (100 << 14) | (100 << 2))
// G_RDPPIPESYNC
WriteDL(0xE7000000, 0)
// always finish it off by telling RDP to stop!
// G_RDPFULLSYNC
WriteDL(0xE9000000, 0)
// G_ENDDL
WriteDL(0xDF000000, 0)

1
inc/kernel.inc
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@ -40,6 +40,7 @@ if K_DEBUG {
macro KMaybeDumpString(str) {
if K_DEBUG {
lui k0, K_BASE
lw t1, K_CONSOLE_AVAILABLE(k0)
beqz t1,+
KDumpString({str})

7
inc/main.inc
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@ -8,9 +8,9 @@ constant ADDR_MASK(0x1FFFFFFF)
constant BLAH_BASE(0x803F)
constant BLAH_COUNTS(0x0010)
constant BLAH_SP_TASK(0x0040)
constant BLAH_DLIST_JUMPER(0x0080)
constant BLAH_XXD(0x0100)
constant BLAH_XXD(0x0080)
constant BLAH_DLIST(0x1000)
constant BLAH_DLIST_JUMPER(BLAH_DLIST - 0xA8)
constant VIDEO_C_BUFFER(0x80100000)
constant VIDEO_C_BUFFER_SIZE(640 * 480 * 4)
@ -24,6 +24,9 @@ constant VIDEO_YIELD(VIDEO_STACK + VIDEO_STACK_SIZE)
constant VIDEO_YIELD_SIZE(0xC00)
macro nops(new_pc) {
if (pc() > {new_pc}) {
error "PC is already past the point specified"
}
while (pc() < {new_pc}) {
nop
}

5
inc/n64_gfx.inc
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@ -71,13 +71,12 @@ macro ScreenNTSC(width,height, status, origin) {
macro ScreenPAL(width,height, status, origin) {
lui a0,VI_BASE // A0 = VI Base Register ($A4400000)
li t0,{status} // T0 = Status/Control
sw t0,VI_STATUS(a0) // Store Status/Control To VI Status Register ($A4400000)
la t0,{origin} // T0 = Origin (Frame Buffer Origin In Bytes)
sw t0,VI_ORIGIN(a0) // Store Origin To VI Origin Register ($A4400004)
lli t0,{width} // T0 = Width (Frame Buffer Line Width In Pixels)
sw t0,VI_WIDTH(a0) // Store Width To VI Width Register ($A4400008)
lli t0,$200 // T0 = Vertical Interrupt (Interrupt When Current Half-Line $200)
//lli t0,2
sw t0,VI_V_INTR(a0) // Store Vertical Interrupt To VI Interrupt Register ($A440000C)
lli t0,0 // T0 = Current Vertical Line (Current Half-Line, Sampled Once Per Line = 0)
sw t0,VI_V_CURRENT_LINE(a0) // Store Current Vertical Line To VI Current Register ($A4400010)
@ -99,6 +98,8 @@ macro ScreenPAL(width,height, status, origin) {
sw t0,VI_X_SCALE(a0) // Store X-Scale To VI X Scale Register ($A4400030)
lli t0,($100*({height}/60)) // T0 = Y-Scale (Vertical Subpixel Offset In 2.10 Format = 0, 1/Vertical Scale Up Factor In 2.10 Format)
sw t0,VI_Y_SCALE(a0) // Store Y-Scale To VI Y Scale Register ($A4400034)
li t0,{status} // T0 = Status/Control
sw t0,VI_STATUS(a0) // Store Status/Control To VI Status Register ($A4400000)
}
macro WaitScanline(scanline) { // Wait For RDP To Reach Scanline

220
main.asm
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@ -1,9 +1,12 @@
// built on the N64 ROM template by krom
arch n64.cpu
endian msb
include "inc/n64.inc"
include "inc/n64_gfx.inc"
include "inc/64drive.inc"
include "inc/main.inc"
include "inc/kernel.inc"
output "test.z64", create
fill 1052672 // Set ROM Size
@ -16,18 +19,39 @@ insert "bin/6102.bin"
// after inserting the header and bootrom,
// origin should be at 0x1000.
include "inc/main.inc"
include "inc/kernel.inc"
include "kernel.asm"
nops(0x80010000)
macro EnableInt() {
lli t0, 0xAAA
lli t1, 0xFF01
lui a0, MI_BASE
sw t0, MI_INTR_MASK(a0)
mtc0 t1, CP0_Status
}
macro DisableInt() {
lli t0, 0x555
lli t1, 0x0001
lui a0, MI_BASE
sw t0, MI_INTR_MASK(a0)
mtc0 t1, CP0_Status
}
macro SP_BUSY_WAIT() {
lui a0, SP_BASE
-
lw t0, SP_STATUS(a0)
andi t0, 0x1C
sltu t0, r0, t0 // TODO: rewrite this
bnez t0,-
nop
}
Main:
lui t0, K_BASE
lui s0, BLAH_BASE
mfc0 t1, CP0_Status+0
mfc0 t1, CP0_Status
sw t1, 8(s0)
nop; nop; nop; nop
@ -41,133 +65,44 @@ Main:
li a2, VIDEO_C_BUFFER
jal LzDecomp
nop
// TODO: flush cache on color buffer
mfc0 t0, CP0_Count
nop; nop; nop; nop
lw t1, BLAH_COUNTS+0(s0)
sw t0, BLAH_COUNTS+8(s0)
lw t1, BLAH_COUNTS+0x0(s0)
sw t0, BLAH_COUNTS+0x4(s0)
subu t1, t0, t1
sw t1, BLAH_COUNTS+0xC(s0)
// FIXME: this is triggering a PI interrupt somehow,
// which is causing the IH debug output to be repeated instead!
jal PokeDataCache
nop
lui a0, BLAH_BASE
lli a1, 0x20
ori a2, a0, BLAH_XXD
jal DumpAndWrite
lli a3, 0x20 * 4
KMaybeDumpString(KSNewline)
InitVideo:
jal LoadRSPBoot
nop
lui a0, BLAH_BASE
jal PushVideoTask
ori a0, a0, BLAH_SP_TASK
jal SetupScreen
nop
mfc0 t0, CP0_Count
sw t0, BLAH_COUNTS+0xC(s0)
TestRDP:
if 0 {
// take a peek at the stuff at the Task data we wrote
lui a0, BLAH_BASE
ori a0, a0, BLAH_SP_TASK
lli a1, 0x80
ori a2, a0, BLAH_XXD
jal DumpAndWrite
lli a3, 0x80 * 4
}
Test3D:
// write the jump to our actual instructions
lui a0, BLAH_BASE
lui t0, 0xDE01 // jump (no push)
sw t0, BLAH_DLIST_JUMPER+0(a0)
ori t1, a0, BLAH_DLIST
sw t0, BLAH_DLIST_JUMPER+0(a0)
sw t1, BLAH_DLIST_JUMPER+4(a0)
define dpos(BLAH_DLIST)
macro WriteDL(evaluate L, evaluate R) {
lui t0, ({L} >> 16) & 0xFFFF
lui t1, ({R} >> 16) & 0xFFFF
ori t0, {L} & 0xFFFF
ori t1, {R} & 0xFFFF
sw t0, {dpos}+0(a0)
sw t1, {dpos}+4(a0)
global evaluate dpos({dpos}+8)
if {dpos} >= 0x8000 {
error "much too much"
// FIXME: just add dpos to a0 and set dpos to 0 when this happens
}
}
lui a0, BLAH_BASE
ori a0, BLAH_DLIST
// write some F3DZEX instructions
include "dlist.asm" // takes a0
{
// G_RDPPIPESYNC
WriteDL(0xE7000000, 0)
// G_TEXTURE (disable tile descriptor; dummy second argument)
WriteDL(0xD7000000, 0xFFFFFFFF)
// G_SETCOMBINE (too complicated to explain here...)
WriteDL(0xFCFFFFFF, 0xFFFE793C)
// G_RDPSETOTHERMODE (set higher flags, clear all lower flags)
// 0011 1000 0010 1100 0011 0000
// G_AD_DISABLE | G_CD_MAGICSQ | G_TC_FILT | G_TF_BILERP |
// G_TT_NONE | G_TL_TILE | G_TD_CLAMP | G_MDSFT_TEXTPERSP |
// G_CYC_FILL | G_PM_NPRIMITIVE
WriteDL(0xEF382C30, 0x00000000)
// G_GEOMETRYMODE
// set some bits (TODO: which?), clear none
WriteDL(0xD9000000, 0x00220405)
// G_SETSCISSOR coordinate order: (top, left), (right, bottom)
WriteDL(0xED000000 | (0 << 14) | (0 << 2), (320 << 14) | (240 << 2))
// G_SETBLENDCOLOR
// sets alpha component to 8, everything else to 0
WriteDL(0xF9000000, 0x00000008)
// sets near-far plane clipping? maybe?
// G_MOVEWORD, sets G_MW_CLIP+$0004
WriteDL(0xDB040004, 2)
// G_MOVEWORD, sets G_MW_CLIP+$000C
WriteDL(0xDB04000C, 2)
// G_MOVEWORD, sets G_MW_CLIP+$0014
WriteDL(0xDB040014, 0x10000 - 2)
// G_MOVEWORD, sets G_MW_CLIP+$001C
WriteDL(0xDB04001C, 0x10000 - 2)
// G_ENDDL: absent since we're not jumping to this routine
}
// G_SETCIMG, set our color buffer (fmt 0, bit size %10, width)
WriteDL(0xFF100000 | (640 - 1), VIDEO_C_BUFFER)
// G_SETZIMG, set our z buffer (fmt 0, bit size %00, width)
WriteDL(0xFE000000, VIDEO_Z_BUFFER)
// G_SETFILLCOLOR
WriteDL(0xF7000000, 0xFFFFFFFF)
// G_FILLRECT coordinate order: (right, bottom), (top, left)
// note that the coordinates are all inclusive!
WriteDL(0xF6000000 | (199 << 14) | (199 << 2), (100 << 14) | (100 << 2))
// G_RDPPIPESYNC
WriteDL(0xE7000000, 0)
// always finish it off by telling RDP to stop!
// G_RDPFULLSYNC, G_ENDDL
WriteDL(0xE9000000, 0); WriteDL(0xDF000000, 0)
jal PokeCaches
nop
// take a peek at the display list we wrote
lui a0, BLAH_BASE
@ -177,25 +112,55 @@ if {dpos} >= 0x8000 {
jal DumpAndWrite
lli a3, 0x80 * 4
Start3D:
DisableInt()
// stuff i'm borrowing from zelda:
lui a0, SP_BASE
lli t0, CLR_SG2 | CLR_SG1 | CLR_SG0 | SET_IOB
sw t0, SP_STATUS(a0)
// NOTE: we should be asserting here that SP_STATUS & 1 != 0
// wait
lui a0, SP_BASE
-
lw t0, SP_STATUS(a0)
andi t0, 1
beqz t0,-
nop
// set RSP PC to IMEM+$0
lui a0, SP_PC_BASE
//sw r0, SP_PC(a0)
li t0, 0x04001000
sw t0, SP_PC(a0)
// tell RSP to run by clearing flags
lui a0, BLAH_BASE
jal PushVideoTask
ori a0, a0, BLAH_SP_TASK
// take a peek at the Task data we wrote
lui a0, BLAH_BASE
ori a0, a0, BLAH_SP_TASK
lli a1, 0x40
ori a2, a0, BLAH_XXD
jal DumpAndWrite
lli a3, 0x40 * 4
KMaybeDumpString(KSNewline)
SP_BUSY_WAIT()
jal LoadRSPBoot
nop
SP_BUSY_WAIT()
// clear all flags that would halt RSP (i.e. tell it to run!)
lui a0, SP_BASE
lli t0, SET_IOB | CLR_STP | CLR_BRK | CLR_HLT
sw t0, SP_STATUS(a0)
nop
// also one thing i noticed in zelda is they set VI_V_INTR to 2
// so they get interrupts with scanlines (unlike us who just waits)
EnableInt()
MainLoop:
// borrowing code from krom for now:
@ -217,24 +182,10 @@ MainLoop:
nop // delay slot
SetupScreen:
// NTSC: 640x480, 32BPP, Interlace, Resample Only, DRAM Origin VIDEO_C_BUFFER
ScreenNTSC(640, 480, BPP32|INTERLACE|AA_MODE_2, VIDEO_C_BUFFER | UNCACHED)
jr ra
nop
LoadRSPBoot:
li t2, F3DZEX_BOOT
li t3, F3DZEX_BOOT.size
subiu t3, t3, 1 // DMA quirk
SP_DMA_WAIT() // clobbers t0, t5
// ori t1, t5, 0x1000
la t1, 0xA4001000
sw t1, SP_MEM_ADDR(t5)
sw t2, SP_DRAM_ADDR(t5)
sw t3, SP_RD_LEN(t5) // pull data from RDRAM into DMEM/IMEM
jr ra
nop
PushVideoTask:
// a0: Task RDRAM Pointer (size: 0x40) (should probably be row-aligned)
subiu sp, sp, 0x18
@ -245,9 +196,9 @@ PushVideoTask:
li t2, F3DZEX_BOOT // does not need masking for some reason
li t3, F3DZEX_BOOT.size
li t4, F3DZEX_IMEM & ADDR_MASK
li t5, F3DZEX_IMEM.size // note: Zelda uses 0x1000 for some reason (0x80 too big).
li t5, F3DZEX_IMEM.size
li t6, F3DZEX_DMEM & ADDR_MASK
li t7, F3DZEX_DMEM.size // note: Zelda uses 0x800 for some reason (way too big).
li t7, F3DZEX_DMEM.size
sw t0, 0x00(a0)
sw t1, 0x04(a0)
sw t2, 0x08(a0)
@ -261,7 +212,7 @@ PushVideoTask:
li t2, VIDEO_SOMETHING & ADDR_MASK
li t3, (VIDEO_SOMETHING & ADDR_MASK) + VIDEO_SOMETHING_SIZE // end pointer (not size!)
li t4, ((BLAH_BASE << 16) | BLAH_DLIST_JUMPER) & ADDR_MASK // initial DList
lli t5, 8 // size of one jump command
lli t5, 8 // size of one jump command. this is ignored and 0xA8 is used instead
li t6, VIDEO_YIELD & ADDR_MASK
li t7, VIDEO_YIELD_SIZE
sw t0, 0x20(a0)
@ -290,7 +241,6 @@ PushVideoTask:
PushRSPTask:
lli t3, 0x40 - 1 // DMA quirk
SP_DMA_WAIT() // clobbers t0, t5
// ori t1, t5, 0xFC0
la t1, 0xA4000FC0
sw t1, SP_MEM_ADDR(t5)
sw a0, SP_DRAM_ADDR(t5)
@ -298,6 +248,18 @@ PushRSPTask:
jr ra
nop
LoadRSPBoot:
la t2, F3DZEX_BOOT & ADDR_MASK
li t3, F3DZEX_BOOT.size
subiu t3, t3, 1 // DMA quirk
SP_DMA_WAIT() // clobbers t0, t5
la t1, 0xA4001000
sw t1, SP_MEM_ADDR(t5)
sw t2, SP_DRAM_ADDR(t5)
sw t3, SP_RD_LEN(t5) // pull data from RDRAM into DMEM/IMEM
jr ra
nop
include "lzss.baku.unsafe.asm"
align(16); insert F3DZEX_BOOT, "bin/F3DZEX2.boot.bin"