Search found 256 matches
- Fri May 29, 2015 1:02 pm
- Forum: Hardware
- Topic: Does Memory Chip have endianness?
- Replies: 3
- Views: 9747
I think whatever th access m68000 do (word or byte) the 68000 always do word access. Lds and uds complete the access. In exemple i take the m68000 do word access and because uds is set (access to addr 0x000000 so msb) the CPU takes only thé msb of the word and put in register. That s my point of vie...
- Fri May 29, 2015 6:16 am
- Forum: Hardware
- Topic: Does Memory Chip have endianness?
- Replies: 3
- Views: 9747
Does Memory Chip have endianness?
Writing my genesis emulator i'm asking myself question about memory Chip. Does a memory chip is made to take part or in MSB or LSB system? If i take the example of M68000. If I write 0x1100 at 0x000000, the processor waiting that : - If I read data at 0x000000 it return 0x11 (MSB) - If I read data a...
- Tue May 26, 2015 7:51 pm
- Forum: Video Display Processor
- Topic: Understanding VDP
- Replies: 10
- Views: 13758
- Mon May 25, 2015 9:26 pm
- Forum: Video Display Processor
- Topic: Understanding VDP
- Replies: 10
- Views: 13758
- Mon May 25, 2015 9:42 am
- Forum: Video Display Processor
- Topic: Understanding VDP
- Replies: 10
- Views: 13758
- Mon May 25, 2015 6:09 am
- Forum: Video Display Processor
- Topic: Understanding VDP
- Replies: 10
- Views: 13758
- Sun May 24, 2015 9:32 pm
- Forum: Video Display Processor
- Topic: Understanding VDP
- Replies: 10
- Views: 13758
Thanks for this informations ! I would need more details about how the FIFO is filled. For example when i write data to VRAM : 1) Data is writed to data port 2) The FIFO is immediately written with this data? 3) Next external slot the VDP take the data from FIFO and write to VRAM If my step 2) is co...
- Sun May 24, 2015 7:30 pm
- Forum: Video Display Processor
- Topic: Understanding VDP
- Replies: 10
- Views: 13758
Understanding VDP
Reading the documentation of Nemesis I understand that VDP access to VRAM are divided in slots. There are slots called "external slots access". When performing DMA The DMA use these slots to access VRAM? There is a link between these slots and the VDP FIFO? I work actually on a VDP core at slot leve...
- Sat May 02, 2015 1:01 pm
- Forum: Exodus
- Topic: Exodus 2.0 + Open Source Release
- Replies: 105
- Views: 311811
- Fri May 01, 2015 5:50 am
- Forum: Exodus
- Topic: Exodus 2.0 + Open Source Release
- Replies: 105
- Views: 311811
- Thu Apr 30, 2015 8:43 pm
- Forum: Exodus
- Topic: Exodus 2.0 + Open Source Release
- Replies: 105
- Views: 311811
- Thu Apr 30, 2015 8:37 pm
- Forum: Exodus
- Topic: Exodus 2.0 + Open Source Release
- Replies: 105
- Views: 311811
- Thu Apr 30, 2015 9:41 am
- Forum: Exodus
- Topic: Exodus 2.0 + Open Source Release
- Replies: 105
- Views: 311811
- Wed Apr 29, 2015 8:29 pm
- Forum: Megadrive/Genesis
- Topic: Cycle accurate emulation: Exodus 2.0 + Open Source Release
- Replies: 10
- Views: 7565
- Mon Apr 27, 2015 4:24 pm
- Forum: Megadrive/Genesis
- Topic: Cycle accurate emulation: Exodus 2.0 + Open Source Release
- Replies: 10
- Views: 7565