Pioneer DVD-V8000 - Manual (Page 80)

Operating Modes
The player only returns system parameter information in cases where ID =
0001, otherwise the player returns error message E06.
Below is a list of the (SPRM) System Parameter. For more information, refer
to "Table 4.6.1.2-1:System Parameters (SPRMs) in the DVD Specifications
for a Read-Only Disc, (Part 3 VIDEO SPECIFICATIONS).
SPRM Explanation
0 Menu Description Language Code (M_LCD)
1 Audio stream number (ASTN) for TT_DOM
2 Sub-picture stream number (SPSTN) & TT_DOM On/Off flag
3 Angle number (AGLN) for TT_DOM
4 Title number (TTN) for TT_DOM
5 VTS Title number (VTS_TTN) for TT_DOM
6 Title PGC number (TT_PGCN) for TT_DOM
7 Part_of_Title number (PTTN) for One_Sequential_PGC_Title
8 Highlighted Button number (HL_BTNN) for Selection state
9 Navigation Timer (NV_TMR)
10 TT_PGCN for NV_TMR
11 Player Audio Mixing Mode (P_AMXMD) for Karaoke
12 Country Code (CTY_LVL) for Parental Management
13 Parental Level (PTL_LVL)
14 Player Configuration (P_CFG) for Video
15 P_CFG for Audio
16 Initial Language Code (INI_LCD) for AST
17 INI_LCD_EXT for AST
18 INI_LCD for SPST
19 (INI_LCD_EXT) Initial Language Code extension for SPST
20 Player Region Code
21 reserved
22 reserved
23 reserved for extended playback mode
For example
SPRM(8): Highlighted Button number (HL_BTNN) for Selection state