Common Programming Languages To Program PldtSuper NES ProgrammingSNES memory map. Memory MappingeditThere are two main types of SNES cartridges, the SNES community refers to them as Lo. ROM and Hi. ROM cartridges. Note This document is reference material for investigators and other FDA personnel. The document does not bind FDA, and does no confer any rights. PowerFlex 70 AC Drives. PowerFlex 70 AC Drives are compact packages of power, control, and operator interface designed to meet demands for space, simplicity, and. TVFZt1F.jpg' alt='Common Programming Languages To Program Pld' title='Common Programming Languages To Program Pld' />Both have different memory mapping. Before explaining Lo. ROM and Hi. ROM though, we should define some keywords here or 0x prefix the following number is hexadecimal. Addresses are often shown as hexadecimal values. Bank 6. 4 Kilobyte 6. CPU understands. The bank of the address AABBCC is AA 1. With three bytes of address space the SNES can address up to 1. Megabytes 22. 4 or 1lt lt 2. Bytes 1. 63. 84 Kilobytes 1. Megabytes. Beware that just because the SNES can address 1. Megabytes does not mean it also HAS 1. MB of RAM here so called WRAM it will be explained in detail later. Just keep in mind that therefore the SNES has 1. Banks start at 0. FF. Page 4 Kilobyte 4. Pages are used whenever the machine has to perform mapping tasks for example, ensuring that address AABBCC and address DDBBCC point to the exactly same data, if thats how the machine is supposed to work. Pages are also used for normal PCs x. X8. 6 6. 4 architectures and are hence not exclusive for the SNES. A page is the smallest mappable unit of a machine it is not possible to map only 2 Kilobytes to the same data you either map 4 Kilobytes, or you map nothing. You will notice that in the tables below there is no entry in which a certain memory range does not end with FFF this is because FFF is the last address of a page, and after this byte a new page begins. The only exception from this rule are the hardware registers in the lower half of banks 0. F. The SNES relies heavily on mapping for example, without mapping it wouldnt be possible to give all banks of 0. F two pages of WRAM directly at the beginning of the bank. One bank holds 1. SNES has 1. 00 banks 1. Both Lo. ROM and Hi. ROM are capable of storing up to 4 Megabytes 3. Megabits of ROM data. Ex. Lo. ROM and Ex. Hi. ROM are said to be able to store up to 8 Megabytes 6. Megabits. How do I recognize the ROM typeeditIn byte 1. SNES header see below for more details, the ROM makeup byte is stored. Value. Bitmask. Definition. Example ROMExample ROM size2. Lo. ROMFinal Fantasy 4. MB2. 10. 01. 0 0. Hi. ROMFinal Fantasy 5. MB3. 00. 01. 1 0. Lo. ROM Fast. ROMUltima VII1. MB3. 10. 01. 1 0. Hi. ROM Fast. ROMFinal Fantasy 6. MB3. 20. 01. 1 0. Ex. Lo. ROMStar Ocean. MB3. 50. 01. 1 0. Ex. Hi. ROMTales Of Phantasia. MBThe bitmask to use is 0. A0. BCD, the basic value is 2. A 0 means Slow. ROM 0, A 1 means Fast. ROM 1. 0. B 1 means Ex. Hi. ROM 4 C 1 means Ex. Lo. ROM 2 D 0 means Lo. ROM 0, D 1 means Hi. ROM 1, is used with B and C in case of extended ROMs. Keep in mind that some people sometimes use Mode 2. Lo. ROM mapping model, and Mode 2. Hi. ROM, although its technically wrong. As the table shows, there are two Lo. ROM and two Hi. ROM mappings which have a different markup byte than the name suggests. This is the Lo. ROM memory map Bank. Offset. Definition. ROM address. Shadowing0. F0. 00. 0 1. FFFLow. RAM, shadowed from bank 7. ENo ROM mapping7. E First two pages of WRAM2. FFUnusedNo ROM mapping8. BF2. 10. 0 2. 1FFPPU1, APU, hardware registersNo ROM mapping8. BF2. 20. 0 2. FFFUnusedNo ROM mapping8. BF3. 00. 0 3. FFFDSP, Super. FX, hardware registers are there any documents regarding this pageI couldnt find any sourceNo ROM mapping8. BF4. 00. 0 4. 0FFOld Style Joypad RegistersNo ROM mapping8. BF4. 10. 0 4. 1FFUnusedNo ROM mapping8. BF4. 20. 0 4. 4FFDMA, PPU2, hardware registersNo ROM mapping8. BF4. 50. 0 5. FFFUnusedNo ROM mapping8. BF6. 00. 0 7. FFFRESERVED enhancement chips memoryNo ROM mapping8. BF8. 00. 0 FFFFLo. ROM section program memory. FFF. 0. 1 0. 08. FFFF. FFF. 3. D 1. E8. EFFFF. E 1. F0. 00. 0 1. F7. FFF. 3. F 1. F8. FFFFF. 8. 0 BF4. F0. FFFMay be mapped as the higher bank 8. FFFF if chip is not MAD 1. Otherwise this area is unused. Unmapped or. 4. 0 2. FFF. 4. 1 2. 08. FFFF. FFF. 6. D 3. E8. EFFFF. E 3. F0. 00. 0 3. F7. FFF. 6. F 3. F8. FFFFF. C0 EF8. FFFFLo. ROM section program memory. FFF. 4. 1 2. 08. FFFF. FFF. 6. D 3. 68. FFFF. E 3. 70. FFF. 6. F 3. FFFF. C0 EF7. D0. FFFCartridge SRAM 4. Kilobytes maximumNo ROM mappingF0 FD8. FFFFLo. ROM section program memory. FFF. 7. 1 3. 88. FFFF. FFF. 7. B 3. D8. DFFFF. C 3. E0. 00. 0 3. E7. FFF. 7. D 3. E8. EFFFF. F0 FD7. E0. FFFLow. RAM WRAMNo ROM mapping0. F First two pages of WRAM2. FFFHigh. RAM WRAMNo ROM mappingNo mapping8. FFFFExtended RAM WRAMNo ROM mappingNo mapping7. F0. 00. 0 FFFFExtended RAM WRAMNo ROM mappingNo mapping8. BF0. 00. 0 FFFFMirror of 0. FSee banks 0. 0 3. F0. 0 3. FC0 EF0. FFFFMirror of 4. FSee banks 4. F4. 0 6. FF0 FD0. FFFFMirror of 7. DSee banks 7. D7. 0 7. DFE FF0. FFFCartridge SRAM 6. Kilobytes 5. 12 KB totalNo ROM mappingNo mapping8. FFFFLo. ROM section program memory. E 3. F0. 00. 0 3. F7. FFF. 7. F 3. F8. FFFFF. No mappingKeep in mind these bankswere overridden by WRAM in the lt 7. F rangeIn Lo. ROM mode, the ROM is always mapped in the upper half of each bank, thus 3. Kilobytes per chunk. The banks 0. 0 7. D address 8. 00. FFFF hold continuous data, as well as banks 8. FF. SRAM on the cartridge is mapped continuously and repeatedly 8 Kilobyte of SRAM are mapped at 0. FFF, 2. 00. 0 3. FFF, 4. FFF and so on. Because the WRAM of the SNES is mapped at bank 7. E 7. F, these banks do not map to the last SRAMROM chunks. This memory has to be accessed via the banks 8. FF. There is no other way of accessing this memory both in Lo. ROM and Hi. ROM mode. Lo. ROM was established to make sure that the system banks 0. F higher pages 7 are actually used. This is done by loading the entire ROM only in higher pages and in 3. Kilobyte chunks. 3. KB 8. 0 banks 4 Megabyte. This is the Hi. ROM memory map Bank. Offset. Definition. ROM address. Shadowing0. F0. 00. 0 1. FFFLow. RAM, shadowed from bank 7. ENo ROM mapping7. E First two pages of WRAM2. Desene Animate Dublate In Limba Romana. FFUnusedNo ROM mapping8. F2. 10. 0 2. 1FFPPU1, APU, hardware registersNo ROM mapping8. F2. 20. 0 2. FFFUnusedNo ROM mapping8. F3. 00. 0 3. FFFDSP, Super. FX, hardware registers are there any documents regarding this page I couldnt find any sourceNo ROM mapping8. F4. 00. 0 4. 0FFOld Style Joypad RegistersNo ROM mapping8. F4. 10. 0 4. 1FFUnusedNo ROM mapping8. F4. 20. 0 4. 4FFDMA, PPU2, hardware registersNo ROM mapping8. F4. 50. 0 5. FFFUnusedNo ROM mapping8. F6. 00. 0 7. FFFRESERVEDNo ROM mapping8. F8. 00. 0 FFFFHi. ROM section program memory. FFFF. 0. 1 0. 18. FFFF. 0. 2 0. 28. FFFF. 1. D 1. D8. DFFFF. 1. E 1. E8. EFFFF. F 1. F8. 00. FFFFF. 8. 0 9. F2. F0. 00. FFFLow. RAM, shadowed from bank 7. ENo ROM mapping7. E First two pages of WRAM2. FFUnusedNo ROM mappingA0 BF2. FFPPU1, APU, hardware registersNo ROM mappingA0 BF2. FFFUnusedNo ROM mappingA0 BF3. FFFDSP, Super. FX, hardware registers are there any documents regarding this page I couldnt find any sourceNo ROM mappingA0 BF4. FFOld Style Joypad RegistersNo ROM mappingA0 BF4.