Editing Macintosh Classic II (section)

=== System Architecture at a Glance ===
{| class="wikitable styled-table" style="width:95%; text-align:center;"
! Sub-system !! Specification (Macintosh Classic II / Performa 200, Oct 1991)
|-
| '''CPU''' || Motorola 68030 @ 16.67 MHz (33.33 MHz ÷ 2)
Internal 32-bit core on a '''16-bit external data bus'''
|-
| '''FPU''' || — (none; 68882 socket removed to cut cost)
|-
| '''Chipset''' || '''“V8 Lite”''' ASIC (MEMCjr + I/O GLU) handles DRAM, video DMA, VIA timers  
|-
| '''ROM''' || '''512 KB “IIci-class”''' ROM SIMM (v7.1) — Color QD 1.3, 32-bit clean, SCSI Mgr 4.3
|-
| '''RAM (base)''' || 2 MB soldered (8 × 256 K × 4 DRAM, 100 ns)
|-
| '''RAM (slots)''' || 2 × 30-pin SIMM — accepts 256 KB, 1 MB, 4 MB (80 ns)  
'''Max = 10 MB''' (2 MB on-board + 2 × 4 MB)
|-
| '''Video''' || 512 × 342 mono (22.1 KB) DMA-steals from main DRAM  
VRAM “page” is dual-ported inside MEMCjr
|-
| '''Sound''' || 8-bit PWM DAC via VIA Timer-1 • 22 kHz → RC filter → LM380 amp
|-
| '''Storage''' || Internal Apple FDHD 1.44 MB (SWIM-II) • 40–160 MB 2.5″ SCSI HDD
|-
| '''Ports''' || ADB • DB-19 ext floppy • DB-25 SCSI-1 • RS-422 serial × 2 • 3.5 mm audio-out
|-
| '''Expansion''' || '''No PDS'''; logic-board edge exposes debug pads only.
|}