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Clarify MBC block

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Lior Halphon 2021-04-13 22:08:25 +03:00
parent 43fb86320e
commit 79f109b463
1 changed files with 3 additions and 3 deletions
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BESS.md
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@ -56,8 +56,8 @@ BESS uses a four-character string to identify Game Boy models:
For example; `'GD '` represents a DMG of an unspecified revision, `'S '` represents some model of the SGB family, and `'CCE '` represent a CGB using CPU revision E. For example; `'GD '` represents a DMG of an unspecified revision, `'S '` represents some model of the SGB family, and `'CCE '` represent a CGB using CPU revision E.
| Offset | Content | | Offset | Content |
|--------|-------------------------------------------------------| |--------|--------------------------------------------------------|
| 0x08 | The value of the PC register | | 0x08 | The value of the PC register |
| 0x0A | The value of the AF register | | 0x0A | The value of the AF register |
| 0x0C | The value of the BC register | | 0x0C | The value of the BC register |
@ -132,7 +132,7 @@ This block contains an MBC-specific number of 3-byte-long pairs that represent t
| 0x9 | The value 0x4000 as a 16-bit integer | | 0x9 | The value 0x4000 as a 16-bit integer |
| 0xB | The current RAM bank | | 0xB | The current RAM bank |
An implementation should parse this block as a series of writes to be made. Values outside the `0x0000-0x7FFF` and `0xA000-0xBFFF` ranges are not allowed. An implementation should parse this block as a series of writes to be made. Values outside the `0x0000-0x7FFF` and `0xA000-0xBFFF` ranges are not allowed. Implementations must perform the writes in order (i.e. not reverse, sorted, or any other transformation on their order)
#### RTC block #### RTC block
The RTC block uses the `'RTC '` identifier, and is an optional block that is used while emulating an MBC3 with an RTC. The contents of this block are identical to 64-bit RTC saves from VBA, which are also used by SameBoy and different emulators such as BGB. The RTC block uses the `'RTC '` identifier, and is an optional block that is used while emulating an MBC3 with an RTC. The contents of this block are identical to 64-bit RTC saves from VBA, which are also used by SameBoy and different emulators such as BGB.