ACS, INC.
ACS-1000
| Processor | 8088 | 
| Processor Speed | 4.77/8MHz | 
| Chip Set | Unidentified | 
| Video Chip Set | None | 
| Maximum Onboard Memory | 1MB | 
| Maximum Video Memory | None | 
| Cache | None | 
| BIOS | Unidentified | 
| Dimensions | 305mm x 216mm | 
| I/O Options | Floppy drive interfaces (2), SASI connector, parallel port, serial ports (2), serial bus connector | 
| NPU Options | 8087 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Reset switch | E2 | Serial port | P7 | 
| Speaker | P2 | Parallel port | P8 | 
| Floppy drive interface | P3 | Reset switch | P9 | 
| Floppy drive interface | P4 | SASI interface | P10 | 
| Serial bus connector | P5 | External battery | P11 | 
| Serial port | P6 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Label | Position | |
| » | Normal reset operation enabled | E2 | Open | 
| Reset controlled by power supply signal | E2 | Closed | |
| » | POST normal operation | S1/1 | Off | 
| POST special test | S1/1 | On | |
| » | NPU not installed | S1/2 | On | 
| NPU installed | S1/2 | Off | |
| » | BIOS type select 8K/16K | S1/10 | Off | 
| BIOS type select 32K | S1/10 | On | |
| DRAM CONFIGURATION | ||||
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | 
| 64KB | 64K | None | None | None | 
| 128KB | 64K | 64K | None | None | 
| 192KB | 64K | 64K | 64K | None | 
| 256KB (A) | 64K | 64K | 64K | 64K | 
| 256KB (B) | 256K | None | None | None | 
| 512KB | 256K | 256K | None | None | 
| 640KB | 256K | 256K | 64K | 64K | 
| 1MB | 256K | 256K | 256K | 256K | 
| Note: The size of the chips are unidentified. | ||||
| DRAM SWITCH CONFIGURATION | |||
| Size | S1/3 | S1/4 | S1/9 | 
| 64KB | On | On | Off | 
| 128KB | Off | On | Off | 
| 192KB | On | Off | Off | 
| 256KB (A) | Off | Off | Off | 
| 256KB (B) | On | On | On | 
| 512KB | Off | On | On | 
| 640KB | Off | Off | On | 
| 1MB | On | Off | On | 
| CPU SPEED SELECTION | |
| Speed | E1 | 
| Keyboard selectable | Pins 1 & 2 closed | 
| 4.77MHz | Pins 2 & 3 closed | 
| 8MHz | Pins 3 & 4 closed | 
| PARALLEL PORT ADDRESS SELECTION | ||
| Setting | E3 | |
| » | LPT2 if another device is set as LPT1. It is set as LPT1 if no other device is installed. | Pins 1 & 2 closed | 
| LPT1 at all times | Pins 3 & 4 closed | |
| SERIAL PORT ADDRESS SELECTION (P6) | ||
| Setting | E4 | |
| » | COM1 | Pins 1 & 2 closed | 
| COM2 | Pins 3 & 4 closed | |
| COM3 | Pins 5 & 6 closed | |
| COM4 | Pins 7 & 8 closed | |
| SERIAL PORT INTERRUPT SELECTION (P6) | ||
| IRQ | E6 | |
| IRQ2 | Pins 5 & 6 closed | |
| IRQ3 | Pins 3 & 4 closed | |
| » | IRQ4 | Pins 1 & 2 closed | 
| SERIAL PORT ADDRESS SELECTION (P7) | ||
| Setting | E5 | |
| COM1 | Pins 1 & 2 closed | |
| » | COM2 | Pins 3 & 4 closed | 
| COM3 | Pins 5 & 6 closed | |
| COM4 | Pins 7 & 8 closed | |
| SERIAL PORT INTERRUPT SELECTION (P7) | ||
| IRQ | E7 | |
| IRQ2 | Pins 5 & 6 closed | |
| » | IRQ3 | Pins 3 & 4 closed | 
| IRQ4 | Pins 1 & 2 closed | |
| MONITOR SELECTION | |||
| Setting | S1/5 | S1/6 | |
| None installed | On | On | |
| » | 80 x 25 color | On | Off | 
| 40 x 25 color | Off | On | |
| Monochrome | Off | Off | |
| FLOPPY DRIVE SELECTION | |||
| Drives installed | S1/7 | S1/8 | |
| 1 | On | On | |
| » | 2 | Off | On | 
| 3 | On | Off | |
| 4 | Off | Off | |