CHA board

From MAME's source:

=MVS=

CHA512Y

 * Max 8 8MiB C ROMs
 * Max 128KiB M1 ROM
 * Max 128KiB S1 ROM
 * NEO-273
 * NEO-ZMC
 * LS139,LS174

CHAFIO

 * used with NEO-CMC 90G06C7042 or NEO-CMC 90G06C7050

CHAFIO

 * Max 8 8MiB C ROMs
 * Max 256KiB (?) M1 ROM
 * used only with NEO-CMC 90G06C7050

PROGBK1

 * 4 2MiB V ROMs
 * 1MiB P1 ROM
 * 2MiB SP2 ROM
 * 2 512KiB EP1/EP2 ROM
 * NEO-PCM
 * LS139,LS08,LS74

PROGV (Brezzasoft)
Same board manufacturer as SNK ?
 * 42pin V1 and P1 ROMs (DIP or TSOP)
 * 64KiB Battery-backed RAM (Mapped to $200000~?)
 * External I/O port (8 ?)
 * Room for 2x8DIP switchs