System ROM: Difference between revisions
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BIOSes are ROMs containing the initial program executed by NeoGeo systems. They are present in all hardware types. | BIOSes are ROMs containing the initial program executed by NeoGeo systems. They are present in all hardware types. | ||
== AES BIOS == | == AES BIOS == | ||
[[File:aes_biosep0.jpg|right|thumb|Toshiba EP0 BIOS ROM found on an AES board]] | |||
128kB. NEO-EP0. | 128kB. NEO-EP0. | ||
== MVS BIOS == | == MVS BIOS == | ||
[[File:mvs_sp-s2.jpg|right|thumb|Toshiba SP-S2 BIOS ROM on a 1FZS MVS slot.]] | |||
128kB. SP-S2. Different names according to nationality. | 128kB. SP-S2. Different names according to nationality. | ||
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512kB (1MB ?). One chip that contains [[Z80]] and [[68k]] programs, PCM sound, and graphics data which are copied to the corresponding [[DRAM|DRAMs]] at boot time. | 512kB (1MB ?). One chip that contains [[Z80]] and [[68k]] programs, PCM sound, and graphics data which are copied to the corresponding [[DRAM|DRAMs]] at boot time. | ||
Graphic visualisation of a CDZ BIOS dump, with separated data blocks (larger size available):<br> | |||
[[File:cdzbiosgfx.png|300px|]] | |||
[[File:brd_spj.jpg|thumb|SPJ Japanese BIOS on a [[ROM-Only boards|ROM-only arcade board]]. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]] | [[File:brd_spj.jpg|thumb|SPJ Japanese BIOS on a [[ROM-Only boards|ROM-only arcade board]]. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]] | ||
[[Category:CPUs]] | [[Category:CPUs]] | ||
Revision as of 22:23, 11 February 2011
BIOSes are ROMs containing the initial program executed by NeoGeo systems. They are present in all hardware types.
AES BIOS
128kB. NEO-EP0.
MVS BIOS
128kB. SP-S2. Different names according to nationality.
CD/CDZ BIOS
512kB (1MB ?). One chip that contains Z80 and 68k programs, PCM sound, and graphics data which are copied to the corresponding DRAMs at boot time.
Graphic visualisation of a CDZ BIOS dump, with separated data blocks (larger size available):
File:Cdzbiosgfx.png
