Reference page for the Krueger SB6502-based exterior signs.
| Field | Value |
|---|
| Manufacturer | Krueger |
| Board | SB6502 |
| Category | External sign |
| Firmware EPROM | 27C64 |
| Text EPROM | 27C256 |
The SB6502 officially supports only 27C64 EPROMs for firmware and 27C256 EPROMs for text data.
Jumper Settings
Jumpers 1-2-3 — Writing Speed (standard firmware)
| J1 | J2 | J3 | Mode |
|---|
| ON | OFF | ON | Normal |
| OFF | ON | ON | Fast |
Jumpers 4-5-6 — Test Mode
| J4 | J5 | J6 | Mode |
|---|
| OFF | OFF | ON | Test mode |
| ON | OFF | OFF | Full black |
| OFF | ON | OFF | Full yellow |
Notes to Add
- Exterior and label photos
- Board photos and component notes
- Compatible control units
- Connector and pinout references
- Protocol or IBIS integration notes
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