Pre-bankruptcy SNK's first and only handheld console, and it is part of their Neo Geo franchises. both B&W and Color variation is exists, it uses same stereo sound system:
Modified SN76489 family PSG - Support independent frequency for all channels, Independent 4 bit volume per left/right output. a.k.a. T6W28 to unknown reason.
2 channel DAC - one is hard panned to left output, other is to right output. It means it also can be single channel stereo DAC.
Z80 - it can be SN7 controller, with driver code loaded from TLCS-900. TLCS-900 can't be control SN7 when Z80 is running.
Entire sound system is builted in K1-CHIP (B&W) or K2-CHIP (Color) SoC like other handheld consoles at this era.
Pre-bankruptcy SNK's first and only handheld console, and it is part of their Neo Geo franchises. both B&W and Color variation is exists, it uses same stereo sound system:
Modified SN76489 family PSG - Support independent frequency for all channels, Independent 4 bit volume per left/right output. a.k.a. T6W28 to unknown reason. 2 channel DAC - one is hard panned to left output, other is to right output. It means it also can be single channel stereo DAC. Z80 - it can be SN7 controller, with driver code loaded from TLCS-900. TLCS-900 can't be control SN7 when Z80 is running.
Entire sound system is builted in K1-CHIP (B&W) or K2-CHIP (Color) SoC like other handheld consoles at this era.