Difference between revisions of "Category:84PCE:RAM:By Address"
From WikiTI
| Line 10: | Line 10: | ||
SafeRAM Areas: | SafeRAM Areas: | ||
| − | * | + | * D031F6h: pixelShadow |
| − | * | + | * D052C6h: pixelShadow2 |
| − | * | + | * D07396h: cmdPixelShadow |
** Each is 8400 bytes in length; and since they are linear, provide a total free space of 25200 bytes of RAM. | ** Each is 8400 bytes in length; and since they are linear, provide a total free space of 25200 bytes of RAM. | ||
** pixelShadow2 is the most stable; and is a viable option for testing TSRs and hooks. | ** pixelShadow2 is the most stable; and is a viable option for testing TSRs and hooks. | ||
[[Category:84PCE:RAM|RAM Areas by Address]] | [[Category:84PCE:RAM|RAM Areas by Address]] | ||
Revision as of 04:34, 7 April 2015
See also list of RAM areas by name.
The eZ80 has a 24-bit linear address space. Layout:
- 000000h: Start of flash. The first 128 K are locked boot sectors. The first 8 are divided into 8 K sectors, all of which are locked. Implies that there is no longer a certificate.
- 000066h: Flash exception handler. Write-to-flash without permission triggers the non-maskable interrupt to fire.
- 00007Eh: Hardware/Emu flag: This byte indicates whether the ROM is a hardware ROM or emulator.
- 000080h: Start of boot code jump table.
- D00000h: Start of RAM. 256 K.
- D40000h: Start of VRAM. 320x240x2 bytes = 153600 bytes.
SafeRAM Areas:
- D031F6h: pixelShadow
- D052C6h: pixelShadow2
- D07396h: cmdPixelShadow
- Each is 8400 bytes in length; and since they are linear, provide a total free space of 25200 bytes of RAM.
- pixelShadow2 is the most stable; and is a viable option for testing TSRs and hooks.
Pages in category "84PCE:RAM:By Address"
The following 38 pages are in this category, out of 38 total.
D |
D cont. |
D cont. |
