The structure of a SNES rom get out of this place • The 65816 starts as 6502 clone in “emulation mode” • We just switched from NES to SNES capabilities
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[PDF] Snmp_V4r01apdf - Super Famicom
On exécute WLA-65816 avec comme fichier d'entrée ”snos asm” et objet de sortie ”snes obj” Vue que l'on compile en ”objet”, l'argument passé au WLA- 65816
[PDF] Programming the 65816 - 6502org
6502/65C02 Addressing Modes on the 65816 Pushing and Pulling the 65816's Additional Registers 65802/65816: Stack Overruns Program or Data
[PDF] Programming the SNES
The structure of a SNES rom get out of this place • The 65816 starts as 6502 clone in “emulation mode” • We just switched from NES to SNES capabilities
[PDF] Architecture of the Super NES
SNES: 16-bit Gaming Console ○ Computer with Based on a 16-bit 65c816 core ○ Input Clock Rate: Used 65816 ISA (similar to Assembly) ○ 1 word per
[PDF] Architecture and Processing of the SNES
10 mar 2020 · Architecture and Processing of the SNES Konrad McClure Ricoh 5A22 Processor • 65816 ISA instruction set • 256 instructions (8-bit opcode)
[PDF] An adventure in writing an emulator in NET Core - XOR
SNES Specification ○ CPU: 16-bit 65816 (3 58MHz) ○ RAM: 128KB (1Mb), 64KB (0 5Mb) Video RAM ○ Graphics: Dedicated graphics processor ○ Colors:
[PDF] SUPER NINTENDO
1 avr 2016 · SNES DEVELOPMENT MANUAL 2 1 1 SA-1 CPU The 65C816 serves as the CPU core It operates at 10 74 MHz 2 1 2 I-RAM The I-RAM
[PDF] Design Document - Michael Kelly
SNES Core o CPU: Represents the 65816 CPU within the SNES Processes instructions in the ROM code, as well as managing timing and triggering other
[PDF] W65C816S Microprocessor DATA SHEET - Description
The BRK instruction for the NMOS 6502, 65C02 and 65C816 is actually a 2 byte instruction The NMOS device simply skips the second byte (i e doesn't care
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ProgrammingtheSNES
Getoutofemulationmode.import native_reset;emu_reset:sei; disable interruptsclc;clear carry flagxce; switch to the native modeby swapping carry and emulation flagjmpnative_reset; •Wegottagetoutofthisplace..•The65816startsas6502clonein"emulationmode"•WejustswitchedfromNEStoSNEScapabilities
Welcometothemainroutinenative_reset:jsrforce_vblankjsrclear_snes; setup stack rep #$10 ; switch to 16bit mode .i16 ldx#$1FFF ; new stack pointer txssep#$10 ; switch to 8bit mode .i8 ; setup soft stack lda#<(__SOFTSTACK_START__ + __SOFTSTACK_SIZE__) stasp; write stack low bytelda#>(__SOFTSTACK_START__ + __SOFTSTACK_SIZE__) stasp+1 ; write stack high bytejsrrelocatedata; copy data from ROM to RAM jsr_set_slot; setup slot 0 -ignore this -my own framework blabla..: ; from now on every slot that returns ends up calling the next initldx#$00 jsr(current_init_slot,x); call initfrom C -ignore that there is some trampoline code involvedjsrend_force_vblank; and release vblank(stop forcing screen to black) cli ; enable interrupts againldx#$00 jsr(current_run_slot,x); call slot 0 run routinejsrforce_vblankbra :-; madness-do the same over and over again, but expect a different result.
AufeinemAugeblau-neuauchinC•Initandmainstructure•SettingRegisters(noDMA)// ...#define __REGB__(r) (*(volatile char*)((char)r))#define CGADD __REGB__(CGADD_ADDR)#define CGDATA __REGB__(CGDATA_ADDR)// ...void init(void){CGADD(0x00);// set a background colorCGDATA(0x3F);CGDATA(0x00);// ...Turn up brightness and enable NMI.}void run(void) {} // this is our main loop!void nmi(void) {}void irq(void) {} // you basically don't care about this one•Getabluescreen-Achievementunlocked!
WelcometotheworldofmagicnumbersinitDMATransfer();... addDMAChannel(0,0x18,current_bank,current_frame,4096,DMA_MODE_SHORT);addDMAChannel(1,0x22,0x66,current_clr,32,DMA_MODE_BYTE_TWICE);startDMATransfer();initHDMATransfer();...addHDMAChannel(2, 0x21, 0x44, &res_bg_table, 0, DMA_MODE_SHORT_TWICE);addHDMAChannel(3, 0x1B, angles[a].bank, angles[a].addr, 0, DMA_MODE_SHORT_TWICE);// ya, I know this one already addHDMAChannel(4, 0x1D, angles[a].bank+2, angles[a].addr, 0, DMA_MODE_SHORT_TWICE);// FIXME: needs checkingaddHDMAChannel(5, 0x05, 0, modeSwitchHdma, 0, DMA_MODE_BYTE);addHDMAChannel(6, 0x2C, 0, modeSwitch2Hdma, 0, DMA_MODE_BYTE);addHDMAChannel(7, 0x0D, 0, scrollSwitchHdma, 0, DMA_MODE_SHORT_TWICE);...startHDMATransfer();
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