 Acer File Extensions |
Acer Z1+ Motherboard
Jumper and Connector Layout
System Overview
- SUPPORTED CPUs : 486SX/25, 486SX/33, 486DX/25, 486DX/33, 486DX2/50 and 486DX2/66 PQFP or PGA type CPU
- SPEED : 25 and 33-MHZ (switchable)
- MEMORY : 4-MB on-board memory expandable to 36-MB using combinations of 4-, 8-, 16-MB SIMMs.
- SECOND-LEVEL CACHE : System supports optional 64-KB, 128-KB or 256-KB second-level cache.
- ROM : Supports 128-KB EPROM or Flash memory
- DISPLAY ADAPTOR : The maximum resolution is 1024x768 resolution with 256 colors, non-interlaced VGA. The default memory size is 1 MB. It can support 640x480x16million true colour.
- FDD INTERFACE : Supports 720 KB/1.44 MB/360-KB and 1.2 MB diskette drives.
- HDD INTERFACE : Embedded HDD interface (IDE) that supports the AT bus HDD
- RTC : Real-time clock supports system clock/calandar with expected life of 5 years.
- HOUSING : ID2P+
- KEYBOARD : PS/2-compatible Acer 101-/102-key keyboard
- MOUSE : PS/2-compatible mouse
- BUZZER : Sound Output
- LED INTERFACE : Speed, hard disk and power indicator
- Slots : 2 ISA, 2 VESA (One VESA master only) or 4 ISA
Jumper Settings
| Jumper | Setting | Function |
|---|---|---|
| J2 | 1-2 | Check Password |
| 2-3 | Bypass Password | |
| J4 | Open | Disable VGA IRQ9 |
| Closed | Enable VGA IRQ9 | |
| J4 Not available on all revisions | ||
| J7, J8 | Open, 2-3 | Write-Through Cache Tag Selection |
| 2-3, 1-2 | Write-Back/7 Bit Cache Tag Selection | |
| 1-2, 2-3 | Write-Back/8 Bit Cache Tag Selection | |
| J13 | Closed | Enable Onboard Battery |
| Open | Disable Onboard Battery | |
| J14 | Closed | Disable DRAM Parity |
| Open | Enable Parity | |
| J20 | 1-2 | Enable Onboard VGA |
| 2-3 | Disable Onboard VGA | |
| J17 | 4-8 | 25MHZ(OR DX2/50) CPU Clock Speed |
| 3-7 | 33MHZ(OR DX2/66) CPU Clock Speed | |
| J27 | 1-2 | Disable Keylock |
| 2-3 | Enable Keylock | |
| J29 | Open | Disable Onboard M5105 |
| Closed | Enable Onboard M5105 | |
| J31 | 1-2 | Disable Onboard Memory |
| 2-3 | Enable Onboard Memory | |
Cache RAM Size Selection
| J5 | J6 | J23 | J24 | |
|---|---|---|---|---|
| 64K | 2-3 | 2-3 | 1-2 | |
| 128K | 1-2 | 2-3 | 2-3 | 2-3 |
| 256K | 1-2 | 1-2 | 1-2 | 2-3 |
CPU Type Selection
| J9 | J10 | J11 | |
|---|---|---|---|
| 486DX / 486DX/2 | Closed | Open | Open |
| 486SX (PGA) | Open | Open | Open |
| 486SX (PQFP) | Open | Closed | Open |
Memory
4-MB on-board memory expandable to 36-MB using combinations of 4-, 8-, 16-MB SIMMs.