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# GESPAC
GESSBS-40
Device Type Mainboard
Processor 68040
Processor Speed 33MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard None
Memory
Maximum Video None
Memory
Cache Unidentified
BIOS Unidentified
Dimensions 160mm x 100mm
I/O Options Serial ports (2), G-96 bus interface, I/O
interface connector, XSB local expansion
submodule buses (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| Multi processor | C1 | Serial port 1 | P4 |
| module | | | |
|-----------------+----------+--------------------+----------|
| G-96 bus | P1 | XSB local | P5 |
| interface | | expansion | |
| | | submodule bus | |
|-----------------+----------+--------------------+----------|
| I/O interface | P2 | XSB local | P6 |
| connector | | expansion | |
| | | submodule bus | |
|-----------------+----------+--------------------+----------|
| Serial port 2 | P3 | Reset/abort switch | P7 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------+-----------+--------------|
| | EPROM size select 64K x 16 | J1 | Pins 1 & 2 |
| | or 128K x 16 | | closed |
|---+-----------------------------+-----------+--------------|
| | EPROM size select 256K x 16 | J1 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------+-----------+--------------|
| | RTC battery disabled | J2 | Pins 1 & 4 |
| | | | closed |
|---+-----------------------------+-----------+--------------|
| | RTC battery enabled | J2 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------+-----------+--------------|
| | Cache enabled | J4/pins 1 | Open |
| | | & 4 | |
|---+-----------------------------+-----------+--------------|
| | Cache disabled | J4/pins 1 | Closed |
| | | & 4 | |
|---+-----------------------------+-----------+--------------|
| | PNMU enabled | J4/pins 2 | Open |
| | | & 3 | |
|---+-----------------------------+-----------+--------------|
| | PNMU disabled | J4/pins 2 | Closed |
| | | & 3 | |
|---+-----------------------------+-----------+--------------|
| | Base address select for | J5 | Pins 1 & 2 |
| | dual ported RAM < 32MB | | closed |
|---+-----------------------------+-----------+--------------|
| | Base address select for | J5 | Pins 2 & 3 |
| | dual ported RAM > 32MB | | closed |
|---+-----------------------------+-----------+--------------|
| | SYSCLK speed select CPU = | J6 | Pins 1 & 2 |
| | SYSCLK | | closed |
|---+-----------------------------+-----------+--------------|
| | SYSCLK speed select CPU = | J6 | Pins 2 & 3 |
| | SYSCLK/2 | | closed |
|---+-----------------------------+-----------+--------------|
| | External cache access | J7 | Open |
| | enabled | | |
|---+-----------------------------+-----------+--------------|
| | External cache access | J7 | Closed |
| | disabled | | |
|---+-----------------------------+-----------+--------------|
| | Enable & SYSCLK and BGRT | J8 | Pins 2 & 3 |
| | driven | | closed |
|---+-----------------------------+-----------+--------------|
| | Enable & SYSCLK and BGRT | J8 | Open |
| | not driven | | |
|---+-----------------------------+-----------+--------------|
| ยป | Factory configured - do not | P8 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DUAL PORTED RAM-BASE ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | J9 |
|----------------------------+-------------------------------|
| A21 | Pins 11 & 12 closed |
|----------------------------+-------------------------------|
| A22 | Pins 10 & 13 closed |
|----------------------------+-------------------------------|
| A23 | Pins 9 & 14 closed |
|----------------------------+-------------------------------|
| A24 | Pins 8 & 15 closed |
|----------------------------+-------------------------------|
| A25 | Pins 7 & 16 closed |
|----------------------------+-------------------------------|
| A26 | Pins 6 & 17 closed |
|----------------------------+-------------------------------|
| A27 | Pins 5 & 18 closed |
|----------------------------+-------------------------------|
| A28 | Pins 4 & 19 closed |
|----------------------------+-------------------------------|
| A29 | Pins 3 & 20 closed |
|----------------------------+-------------------------------|
| A30 | Pins 2 & 21 closed |
|----------------------------+-------------------------------|
| A31 | Pins 1 & 22 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STANDBY BATTERY POWER SELECTION |
|------------------------------------------------------------|
| Setting | J3 |
|----------------------------------------+-------------------|
| From P1-29b (+Vbatt bus line) | Pin 1 |
|----------------------------------------+-------------------|
| To MAX696 power supply supervisor chip | Pin 2 |
|----------------------------------------+-------------------|
| From local battery | Pin 3 |
|------------------------------------------------------------|
| Note: Location of LEDs is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------+--------+-----------------------------------|
| LED1 | Red | On | Processor is in supervisor mode |
|------+--------+--------+-----------------------------------|
| LED2 | Orange | On | Processor attempting to access |
| | | | and external module & it has not |
| | | | yet the owner of the G-6432 bus |
| | | | module |
|------+--------+--------+-----------------------------------|
| LED3 | Yellow | On | GESSBS-40 is retrying an aborted |
| | | | cycle |
|------+--------+--------+-----------------------------------|
| LED4 | Green | On | Processor is halted or during a |
| | | | reset operation |
+------------------------------------------------------------+